A 251 mL aqueous solution containing 0.400 g of an unknown polymer has an osmotic pressure of 26.9 torr at 30.0 °C. What is the molar mass of the polymer?

Answers

Answer 1

The response to the question is that the polymer's molar mass is (7.99 × 10^-3 g/torr-L)

What are molar mass and a mole?

Avogadro's quantity (6.022 x 1023) of atoms or formula units make up one mole of a substance. The volume of mole of a substance of a chemical is indicated by its molar mass.

The Van 't Hoff method may be used to get the polymer's molarity from its osmotic pressure: = iRT/V.

where P is the gas constant, I the van 't Hock factor (number of nanoparticles per molecule), R the osmotic, T the temp in Kelvin, and V the volume a mole of solute occupies.

By rewriting the equation and inserting therefore first, one may get the molar mass (M):

Substituting the given values:

M = (i)(0.0821 Latm/molK)(303 K)/(26.9 torr)(0.251 L) =

7.99 × 10^-3 g/torr-L

To know more about molar mass visit:

https://brainly.com/question/14657944

#SPJ4


Related Questions

there are 39 3939 students in ms. salazar's chemistry class. if ms. salazar divides the class into 9 99 lab groups of 4 44 or 5 55 students each, what would be the number of lab groups with 5 55 students? choose 1 answer: 1 11

Answers

The number of lab groups with 5 students would be 1.

To determine the number of lab groups with 5 students, we need to find the remainder when the number of students is divided by the number of students per group. In this case, 39 students ÷ 4 students per group = 9 groups with a remainder of 7.

Since we can't have fractional lab groups, we need to add another group to accommodate the remaining 7 students. This means that the number of lab groups with 5 students would be 7 ÷ 4 students per group = 1 additional group.

So, the number of lab groups with 5 students would be 1.

To know more about  lab groups here

https://brainly.com/question/24647770

#SPJ4

--The given question is incorrect, the correct question is

"There are 39 students in Ms. Salazar's chemistry class. If Ms. Salazar divides the class into 9 lab groups of 4 or 5 students each, what would be the number of lab groups with 5 students?"--

Rank the solvents according to their polarities, from the most polar to nonpolar.
water, ethanol, acetone, ethyl acetate, and hexane.

Answers

Water is the most good solvent, then ethanol, acetone, ethyl acetate, and hexane in decreasing order of polarity.

What does polarity imply in plain English?

An object has polarity when it has 2 distinct, opposing poles that may alternatively attract or reject each other and. The phrase is frequently employed to describe the electron's movement in the fields of electric, magnetism, chemical, and electronic signaling.

What are some polarity instances?

Polarities are frequently seen in company, such as centralized vs decentralization or development versus profit maximization. Considering the work-life balance, liberal vs conservative beliefs, etc. It is a hallmark of the system that there is a constant inherent bad blood between the two.

To know more about polarity visit:

https://brainly.com/question/30002497

#SPJ4

how much heat, in joules, is required to warm a metal disc from 14 oc to 42 oc? the mass of the disc is 2.7 grams and the specific heat of the disc is 2.3 j/goc.

Answers

Joules are required to heat a metal disc from 14 oc to 42 oc at 0.0304233 j/goc. The disc has a mass of 2.7 grams and a specific heat of 2.3 j/goc.

What is the specific heat, expressed as J/(kg/K)?

Specific heat is measured in J/kg•K according to the SI system. Specific heat may also be expressed in J/g•K on occasion. Since aluminum has a specific heat of 903 J/kg•K, it takes 903 J to raise 1.00 kg of aluminum by 1.00 K.

What does 4.184 J GC stand for?

The specific heat of water is 4.184 J/g-K because a calorie contains 4.184 joules. A substance's molar heat capacity, or the heat required to raise the temperature of one mole of the substance by either 1°C or 1°K, can also be used to describe the ease with which it gains or loses heat.

To know more about specific heat visit :-

https://brainly.com/question/11297584

#SPJ4

on the periodic table of the elements, mercury (hg) has an atomic number of 80 and a mass number of 200.59. it has seven stable isotopes. the most abundant of these probably have

Answers

Mercury (Hg) has an atomic number of 80 and a mass number of 200.59. It has seven stable isotopes. The most abundant of these probably have more than 80 neutrons each.

Option A is correct.

What does the term "atomic number" mean?

The number of a chemical element in the periodic system, in which the elements are arranged by the number of protons in the nucleus, which increases with increasing number. As a result, the atomic number is also the number of protons in the neutral atom, which is always the same as the number of electrons. The number of protons in an atom's nucleus is known as its atomic number. An element's identity is determined by its number of protons—for example, a carbon atom with six protons is an element, regardless of how many neutrons are present.

An atom's atomic number is the same as the number of protons in its nucleus or electrons in an electrically neutral atom. The number of protons in an atom. A sodium atom, for instance, has 11 electrons and 11 protons.

Incomplete question :

On the periodic table of the elements, mercury (Hg) has an atomic number of 80 and a mass number of 200.59. It has seven stable isotopes. The most abundant of these probably have ________.

A. more than 80 neutrons each.

B. more than 50 neutrons each

C. less than 80 neutrons each

Learn more about atomic number :

brainly.com/question/11353462

#SPJ1

If unknown concentration of 25.00 mL of H₂SO₄ is titrated with 30.00 mL of 0.75M of NaOH to its equivalence point, what is the concentration of the sulfuric acid

Answers

According to the molar concentration, the  concentration of the sulfuric acid is 0.9 M.

What is molar concentration?

Molar concentration is defined as a measure by which concentration of chemical substances present in a solution are determined. It is defined in particular reference to solute concentration in a solution . Most commonly used unit for molar concentration is moles/liter.

Molar concentration is calculated by the formula, molar concentration=mass/ molar mass ×1/volume of solution in liters.In terms of moles, it's formula is given as molar concentration= number of moles /volume of solution in liters.

In case of 2 solutions, molarity is calculated as, M₁V₁=M₂V₂ thus, M₁=0.75×30/25= 0.9 M.

Thus, the  concentration of the sulfuric acid is 0.9 M.

Learn more about molar concentration,here:

https://brainly.com/question/21841645

#SPJ1

which structural feature most liekly accounts for the signals aroudn 7 ppm in the given 1h nmr spectrum

Answers

The signals around 7 ppm in a 1H NMR spectrum are likely due to the presence of aromatic protons.

Aromatic protons are those protons that are attached to an aromatic ring structure, such as a benzene ring. These protons have a very distinct chemical shift of around 7 ppm and will show up as a multiplet in the spectrum.

The aromatic protons also have an increased coupling effect, resulting in the signal appearing as a multiplet rather than a single peak. Additionally, the coupling effect between the aromatic protons can cause them to appear as a triplet, quartet, sextet, or other pattern, depending on the number of aromatic protons in the molecule.

Learn more about spectrum:

https://brainly.com/question/23423065

#SPJ4

all organic compounds contain ______, hydrogen, and usually oxygen.

Answers

Answer:

Carbon

Explanation:

Carbon is the BASIS of organic chemistry.

why are triglycerides ideal for fat storage? multiple select question. they are chemically stable. they maintain hydration. they are energy dense. they are also a vitamin b-12 depot.

Answers

They are energy dense. They are chemically stable.

Triglycerides are perfect for storing fat, so why?

Triglycerides, the primary form of fat humans ingest, are particularly well adapted for energy storage since they contain more than twice the amount of energy as proteins or carbohydrates.Triglycerides are digested during digestion and then transported to cells via the circulation.

The purpose of triglyceride storage?

Your blood contains two different forms of lipids, glycerides and cholesterol:Triglycerides give your body energy while storing extra calories.Cells and some hormones are made of cholesterol.

To know more about chemically stable visit:

https://brainly.com/question/10291952

#SPJ4

what is the significance of the different forms of glucose (a or b) to a biologist or nutritionist (not to a pure chemist)?

Answers

The distinction between glucose forms (a and b) is important to biologists and nutritionists because it shows the various configurations that glucose may take in three-dimensional space.

The two forms, known as isomers, a and b, share the same chemical formula but have differing spatial arrangements of its atoms. Because of the numerous ways they are arranged, they have various physical and biological characteristics, including variations in solubility and reactivity, as well as interactions with other molecules like enzymes and cell membranes. The relevance of the various forms of glucose in biology and nutrition is connected to how cells utilise glucose as a source of energy. Polysaccharides like starch and cellulose may be created by linking together glucose molecules. When joined together, the various types of glucose may take on distinct characteristics that have an impact on how the body digests and uses these polysaccharides.

learn more about glucose here:

https://brainly.com/question/2396657

#SPJ4

The first to purpose that all matter is made of atomsA(110)
B.(118)

Answers

Answer:

Dalton's atomic theory was the first complete attempt to describe all matter in terms of atoms and their properties. Dalton based his theory on the law of conservation of mass and the law of constant composition. The first part of his theory states that all matter is made of atoms, which are indivisible.

Explanation:

when information is encoded in molecules, the reproduction cost is _____ than it would be if the information were encoded in bits.A. LowerB. None of TheseC. Higher

Answers

Information that is encoded in molecules has a higher cost to reproduce than information that is represented in bits. The right answer is C.

What's the simplest way to describe molecules?

The lowest particle of a material that possesses all of its physical and chemical characteristics is referred to as its malekyol (MAH-leh-kyool).Each molecule consists of one or perhaps more atoms

Which sorts of molecules are there?

The smallest component in a chemical compound or an element that possesses that element's or compound's chemical characteristics is called a molecule. Chemical bonds allow atoms to come together to create molecules. There are two different kinds of molecules: 1. Molecules of an element The molecules that make up an element .

To know more about Molecules visit :

https://brainly.com/question/16897383

#SPJ4

You titrate a 200 ml hbr solution with 0.5 m koh. if it takes 150 ml of koh to reach the equivalence point, what was the concentration of the original acid solution?

Answers

The reaction between HBr and KOH is a neutralization reaction, which occurs when an acid reacts with a base to form a salt and water.

The balanced chemical equation for the reaction between HBr and KOH is:

HBr + KOH -> KBr + H2O

This equation tells us that one mole of HBr reacts with one mole of KOH to form one mole of KBr and one mole of water.

Next, we need to find the number of moles of HBr that reacted with KOH. This can be calculated using the volume (150 ml) and concentration (0.5 M) of the KOH solution:

moles KOH = 0.5 M x 150 ml / 1000 ml/L = 0.075 moles

Since one mole of HBr reacts with one mole of KOH, the number of moles of HBr is equal to the number of moles of KOH:

moles HBr = 0.075 moles

Finally, we can use the number of moles of HBr and the volume of the HBr solution (200 ml) to calculate its concentration:

concentration HBr = moles HBr / (200 ml / 1000 ml/L) = 0.075 moles / 0.2 L = 0.375 M

To learn more about neutralization reaction please click on below link

https://brainly.com/question/30068395

#SPJ4

you respond to a highway incident in which a road trailer has turned onto its side and is heard to be leaking. you can see the placard on the trailer. the identification number on the placard is 1978. what is the chemical? select one: a. propane b. nitrogen c. gasoline d. oxygen

Answers

Based on the identification number 1978, the chemical being leaked from the trailer is likely to be gasoline. Option C is correct.

In the United States, the identification number on a placard is known as the UN Number or the Hazardous Materials Identification System (HMIS) number, which is used to identify hazardous materials being transported. The UN number 1978 will corresponds to gasoline, which is a flammable liquid.

It is very important to follow proper safety procedures when responding to a highway incident is involving hazardous materials, as gasoline can be highly flammable as well as pose a risk of fire or explosion.

To know more about gasoline here

https://brainly.com/question/13402652

#SPJ4

why is the energy from a molecule of atp required by the sodium-potassium pump?

Answers

The sodium-potassium pump requires a molecule of ATP's energy.

What is ATP?

The main source of energy in cells is ATP (adenosine triphosphate), a highly energetic molecule. It is utilised by enzymes to fuel a variety of cellular functions, such as muscle contraction, protein synthesis, and ion transport. It stores and transmits chemical energy within cells.

The sodium-potassium pump is an active transport process that transports ions against their concentration gradient, requiring energy input. As a result, it needs the energy from an ATP molecule. The pump creates a concentration gradient and preserves the resting membrane potential by exchanging three sodium ions (Na+) for two potassium ions (K+) in the cell membrane.

The ATP molecule is hydrolyzed to ADP as part of the pumping process, and the energy contained in the ATP molecule is utilised to power the movement of ions against their concentration gradient. Numerous cellular processes, such as nerve impulses and muscle contractions, depend on this crucial mechanism, and the pump needs ATP energy to operate effectively.

To know more about ATP, visit:

https://brainly.com/question/15543060

#SPJ4

in which of the following regions of a generic phase diagram it is possible for the liquid to be the most stable phase? check all that apply. in which of the following regions of a generic phase diagram it is possible for the liquid to be the most stable phase?check all that apply. temperatures greater than the critical temperature temperatures less than the temperature of the triple point pressures greater than the critical pressure pressures less than the pressure of the triple point

Answers

In a generic phase diagram, it is possible for the liquid to be the most stable phase at:

Temperatures less than the temperature of the triple point.

Pressures less than the pressure of the triple point.

The triple point on a phase diagram represents the conditions (temperature and pressure) at which all three phases (solid, liquid, and gas) can coexist in equilibrium. At temperatures below the temperature of the triple point and pressures below the pressure of the triple point, the liquid phase is the most stable phase and can exist on its own without undergoing a phase change.

On the other hand, temperatures greater than the critical temperature and pressures greater than the critical pressure are in the supercritical region, where the distinction between the liquid and gas phases is no longer meaningful, and the substance exists as a supercritical fluid. In this region, the liquid is not a stable phase and would evaporate or boil if present.

Learn more about pressure here:

https://brainly.com/question/29341536

#SPJ4

Select the most complete explanation of what the pH scale actually measures.
A) The acidity of a solvent
B) The alkalinity of a solvent

Answers

C.The concentration of hydrogen ions in a solution is the most correct explanation of what the pH scale actually measures that determines acidity and alkalinity of a solvent

What exactly does a pH metre measure?

Monitoring of the hydrogen ion activity in solutions is done with a pH metre. Potentiometry is the basis underlying pH metres' operation. This is how the electric potential of a solution is estimated (voltage). The hydrogen ion concentration in the solution is evaluated by pH. A solution with more H+ ions will always be acidic, while a solution with more OH- ions will constantly be alkaline. The pH range for solutions is 1 to 14. A solution with a pH of 1 will be strongly acidic, whereas one with a pH of 14 will be extremely basic.

Learn more about pH scale here:

brainly.com/question/15045265

#SPJ4

Select the most complete explanation of what the pH scale actually measures.

A) The acidity of a solvent

B) The alkalinity of a solvent

C)The concentration of hydrogen ions in a solution

D)The concentration of hydroxide ions in a solute

choose one of the precipitates that formed na3po4. write the molecular equation, the complete ionic equation, and the net ionic equation.

Answers

The molecular equation, complete complete ionic equation, and the net ionic equation for the reaction of na3po4 is a double displacement reaction.

A precipitation reaction is very insoluble nickel phosphate. It is produced as a light green precipitate when aqueous solutions of the two salts are mixed. The other product is soluble when sodium chloride and that remains in that particular solution for that time.

(1) Molecular equation:

3NiCl2 (aq) + 2Na3PO4 (aq) = Ni3(PO4)2 (s) + 6NaCl (aq)

(2) Ionic equation:

3Ni(2+) (aq) + 6Cl(-) (aq) + 6Na(+) (aq) + 2PO4(3-) = Ni3(PO4)2 (s) + 6Na(+) (aq) + 6Cl(-) (aq)

(3) Net ionic equation:

3Ni(2+) (aq) + 2PO4(3-) (aq) = Ni3(PO4)2 (s)

The net ionic equation is actually obtained by cancellation of the common Na(+) and Cl(-) terms on both the sides which are reactant and product sides.

Learn more about double displacement reaction:

brainly.com/question/29307794

#SPJ4

true or false. orbitals are a delocalized cloud of electron density

Answers

It holds true. Orbitals are still a molecular orbitals cloud of charge density, which means that the protons are dispersed across a wide area as opposed to someone being centralized in a single place.

Where are the orbitals?

Each subshell's electrons are organized into orbitals, which are areas of the atom's interior where a certain electron is still most likely to be. There are two electrons in each orbital, and their spins vary. An electron in a certain subshell can be located in an atom's orbital, an area of space.

What is the name for orbitals?

Any atom typically contains a large number of orbitals for each n value and these orbitals are collectively referred to as electron shells.

To know more about Orbitals visit :

https://brainly.com/question/18914648

#SPJ4

What is the direct transfer of phosphate between substrates is called?

Answers

Substrate-level phosphorylation is the term used to describe the direct transfer for phosphate between substrates.

What exactly do you mean by phosphate?

In chemistry, a phosphate is an anion, salts, functional group, an ester made from phosphoric acid. Most frequently, it refers to orthophosphate, which is a product of orthophosphoric acid (also known as phosphoric acid) H3PO4. One phosphorus atom is joined with four oxygen atoms to form a phosphate. A phosphate group is what happens when a phosphate molecule is joined to a carbon-containing molecule.

What is phosphate's primary use?

In the development of bone and teeth, phosphate is helpful. Additionally, phosphorus is a component of a number of essential compounds, such as those that the cell uses for DNA, cell membranes, and energy (deoxyribonucleic acid).

To know more about phosphate visit :

https://brainly.com/question/2426918

#SPJ4

a certain liquid has a normal freezing point of and a freezing point depression constant . a solution is prepared by dissolving some potassium bromide () in of . this solution freezes at . calculate the mass of that was dissolved. round your answer to significant digits.

Answers

The mass of solution is 1.0× 10² g

ABOUT MASS

Mass is a measure of the increase in an object based on force. Everything that occupies space and has mass is called matter. Matter consists of a single substance and a mixture of substances.

Matter has mass and volume. Mass is a measure of the resistance of an object to a certain force or can be interpreted as the amount of matter in an object. Meanwhile, volume is the size of the room it occupies.

Mass is expressed in kilograms (kg) or grams (g), 1 kg = 1000 g. While the volume is expressed in units of cubic meters (m³) or cubic decimeters (dm³). The unit of volume is a unit in the international system. Volume is also often expressed in liters (L) or milliliters (ml).

Learn more about mass of solution at

https://brainly.com/question/29482678

#SPJ4

if you did not know the formula of the metal chloride product in the balanced reaction, would you be able to determine the molar mass of the metal?

Answers

Yes, you can determine the molar mass of the metal if you know the balanced reaction and the molar masses of the reactants.

By calculating the mole ratio of reactants, you can figure out the mole ratio of the products, and then calculate the molar mass of the metal by multiplying the mole ratio of the metal chloride product by its molar mass.

For example, if the balanced equation is 2Na + Cl2 → 2NaCl, then the moles of the metal in 2NaCl is 2 moles and the molar mass of the metal is 22.99 g/mol.

Learn more about the molar mass of the metal:

https://brainly.com/question/6112557

#SPJ4

how will the presence or absence of the nh4 ion be detected in fertilizer? add silver nitrate (agno3) and look for a white precipitate. add sodium hydroxide (naoh) and look for a color change with red litmus paper. add hydrochloric acid (hcl) and look for the presence of bubbles. add hydrochloric acid (hcl) and look for a color change with red litmus paper. add hydrochloric acid (hcl), followed by bacl2 and look for the formation of a white precipitate.

Answers

The presence or the absence of the NH₄⁺ ion be detected in fertilizer is the correct option is  add sodium hydroxide (NaOH) and look for a color change with red litmus paper.

The  NH₄⁺ ion that is the ammonium ion in a solution can be detected by adding the sodium hydroxide solution and then heat the solution. The ammonium ion will convert to the ammonia gas if the ammonium ions are present. The ammonia has the different odor.

It will also `change the color of the red litmus paper to the blue. Therefore in this way we can detected the absence and the presence of the ammonium ion.

To learn more about litmus paper here

https://brainly.com/question/13945946

#SPJ4

At conditions of Standard Temperature and Pressure, determine how many liters of hydrogen gas are produced by placing a zinc nail with a mass of 2.2g into an excess of hydrochloric acid. A) 0.0015L
B) 0.75L
C) 1.33L
D) 6.42L

Answers

B) 0.75L of hydrogen gas would be produced by placing a 2.2g zinc nail into an excess of hydrochloric acid at standard temperature and pressure (STP).

The general gas equation, often known as the ideal gas law, is the equation of state for an ideal gas. It has a number of limitations, but it provides a decent approximation of the behavior of numerous gases under various circumstances. 

 The common empirical form of the ideal gas law is as follows:

[tex]PV=nRT[/tex]

The reaction that occurs can be represented as:

[tex]Zn+2HCl[/tex] → [tex]ZnCl_2 + H_2[/tex]

As we see,

1 mole hydrogen is generated by 1 mole zinc.

It is stated that the reaction is occurred at Standard Temperature and Pressure.

So, We know,

At STP, 1 mole would contain 22.4 L

∵ 1 mole zinc will provide  22.4 L of hydrogen gas.

We shall now determine the quantity of zinc moles by the formula

(Provided mass) / (Molecular weight of Zinc = 65)

⇒ [tex]\frac{2.2}{65}[/tex]

⇒ 0.035 moles

As a result, the quantity of hydrogen gas ([tex]H_2[/tex]) generated by a 0.035 mole would be:

[tex]0.035*22.4 = 0.78[/tex] ≈ 0.75 L

Learn more about ideal gas law:

brainly.com/question/28257995

#SPJ4

why does the size of an atom decrease as you move across a period?

Answers

A reduced atomic radius is the result of the electron cloud being drawn closer to the nucleus due to a larger effective nuclear charge's stronger attraction to the electrons.

By atomic, what do you mean?

Atomic is derived from the Greek word atomos, which means "uncut" or "indivisible," and means "indivisible particle" in Latin. the meanings of atomic. adjective. containing, involving, or pertaining to atoms.

Is atomic a sort of word?

Atomic is an adjective, as was said above. Use of the adjective: Atomic hydrogen is released in a stream. We created a little nuclear bomb in the basement. The hairs of a bedbug are virtually atomic, to use an adjective.

To know more about Atom visit:

https://brainly.com/question/20948994

#SPJ4

unfavorable temperatures and ph changes can cause a protein to change shape. this is called

Answers

A protein can alter shape in response to harsh temperatures and ph changes. It's known as denaturation.

What is the straightforward meaning of protein?

(PROH-teen) a structure composed of amino acids. The body need proteins to operate correctly. They serve as the building blocks for several bodily components, including the skin, hair, and acids, cytokines, and antibodies.

What makes protein so crucial?

Protein is present in every human cell. The core component of proteins is an amino acid chain. In order for your body to repair damaged cells and create new ones, you need proteins in your diet. Protein is essential for proper growth and development in children, adolescents, and expecting women.

To know more about Protein visit :

https://brainly.com/question/29776206

#SPJ4

when the velocity of an enzymatic reaction is 30% vmax, what is the relationship between km and substrate concentration?

Answers

The correct answer to the first question is a) 0.4Km = [S].

When the velocity of an enzymatic reaction is 30% Vmax, the substrate concentration is 0.4 times the Michaelis constant (Km). This means that the substrate concentration is equal to 0.4 times the Km value.

The correct answer to the second question is e) a and b.

The glycogen phosphorylase enzyme can be activated/stimulated by both phosphorylation of selected serine residues in the phosphorylase b form of the enzyme, as well as the actions of positive allosteric modulators such as AMP

Find out more about enzymatic reaction

brainly.com/question/29102181

#SPJ4

question:-

When the velocity of an enzymatic reaction is 30% Vmax, what is the relationship between Km and substrate concentration? a) 0.4Km=[S] b) Km=0.4[ S] c) Km=4[ S] d) [S]=40Km Question 7 The glycogen phosphorylase enzyme is activated/stimulated by: a) phosphorylation of selected serine residues found in the phosphorylase b form of the enzyme. b) the actions of positive allosteric modulators such as AMP. c) proteolysis through the actions of trypsin followed by self digestion. d) the association of 4 phosphorylase b subunits to produce phosphorylase a, a functional oligomeric protein. e) a and b

enough of a monoprotic acid is dissolved in water to produce a 1.79 m solution. the ph of the resulting solution is 2.67 . calculate the ka for the acid.

Answers

In this case, the pH of the solution is 2.67, which indicates that it is a strong acid.

The pH of a solution is a measure of its hydrogen ion concentration and can be used to determine the strength of an acid.

The acid dissociation constant (Ka) is a measure of the strength of an acid and is defined as the product of the concentration of hydrogen ions (H+) and the concentration of the conjugate base (A-) divided by the concentration of the undissociated acid (HA).

To calculate the Ka for the monoprotic acid, we need to first determine the concentration of hydrogen ions in the solution. This can be done using the equation:

[H+] = 10^(-pH) = 10^(-2.67) = 4.33 × 10^(-3)

Next, we can use the concentration of hydrogen ions and the initial concentration of the acid to determine the concentration of the conjugate base (A-).

Finally, we can use these values to calculate the Ka for the acid:

Ka = [H+] * [A-] / [HA]

Ka = [H+] × [A-] / [HA] = 6.31 x 10^-3 × [A-] / (1.79 - [A-])

It is important to note that the concentration of the acid will decrease as it dissociates in solution, so it is necessary to use the initial concentration of the acid in this calculation.

Learn more about strong acid:

brainly.com/question/16749233

#SPJ4

What adds nucleotides to exposed bases?

Answers

An enzyme known as DNA polymerase adds nucleotides to exposed bases during DNA replication.

What is DNA polymerase?

An enzyme known as DNA polymerase, which adds nucleotides to the exposed bases of the DNA strand, catalyses the replication of DNA. The DNA double helix unwinds and the two strands split during DNA replication. This enables the original DNA strand's exposed bases to act as a template for the construction of a new complimentary strand.

By pairing the appropriate complementary nucleotide with the exposed base and then joining the complementary nucleotides together via the formation of a phosphodiester bond, DNA polymerase adds nucleotides to the exposed bases. A primase is required to add a short RNA primer to the template strand since DNA polymerase can only add nucleotides to the 3'-end of a developing strand.

To know more about DNA, visit:

https://brainly.com/question/28481425

#SPJ4

suppose a sample of vinegar contains 0.0685 g/ml of acetic acid, which has a molar mass of 60.052 g/mol. how many moles of acetic acid are present in a 15.6 ml solution of the vinegar?

Answers

There are 0.0027 moles of acetic acid are present in a 15.6 ml solution of vinegar.

By applying the following formula, one can determine how many moles of acetic acid there are:

(Mass of the solute) times / (molar mass of solute)

mass of solute = x (concentration) (volume of solution)

1.07 g moles (mass of solute) = 1.07 g / 60.052 g/mol (mass of solute = 0.0685 g/ml x 15.6 ml) = 0.0027 moles.

The Na, also known as the Avogadro constant, is a proportionality constant that links a sample's amount of material to the number of constituent particles that make up those particles. Acetic acid, with a molar mass of 60.052 g/mol, has a concentration of 0.0685 g/ml in a sample of vinegar. A mole is the unit of mass for a material that contains its component particles.

Learn more about vinegar here:

https://brainly.com/question/4239583

#SPJ4

a gas made up of homonuclear diatomic molecules escapes through a pinhole 0.268 times as fast as h2 gas. write the chemical formula of the gas

Answers

The square root of the gas's molecular mass is inversely proportional to the rate of effusion. the gas's chemical composition; He.

How can the bond order of a homonuclear diatomic molecule be decreased?

Note: Either removing electrons from an AntiBonding Molecular Orbital or adding electrons to a Bonding Molecular Orbital can lower the bond order of a homonuclear diatomic molecule.

Which homonuclear diatomic elements are there?

Hydrogen (H2), oxygen (O2), nitrogen (N2), and all halogens are homonuclear diatomic molecules. A common triatomic homonuclear molecule is ozone (O3). Arsenic (As4) and phosphorus (P4) are examples of homonuclear tetratomic molecules.

To know more about molecular mass visit :-

https://brainly.com/question/18446366

#SPJ4

Other Questions
the community health nurse visits a local playground and assesses the safety of newly installed equipment. which level of intervention is the nurse performing? please help me with this math problem problem 1: The school that Gabriella goes to is selling tickets to the annual talent show. On the first day of ticket sales the school sold 1 adult ticket and 1- tickets for a total of $39. The school took $105 on the second day by selling 9 adult tickets and 8 student tickets. What is the price each of one adult ticket and one student ticket?problem 2:The senior classes at High School A rented and filled 2 vans and 2 buses with 326 students. High School B rented and filled 11 vans and 6 buses with 233 students. Each van and each bus carried the same number of student. Find the number of students in each an and in each bus. The move toward formal nursing education came after which war? 5(z+6) 10=10z How do I do this qustion?? How to Fix Steam "1 file failed to validate and will be reacquired" Error a rectangular field is to be enclosed by 400 feet of fence. one side of the field is a building, so fencing is not required on that side. rectangular field with one side against a building. if x denotes the length of one side of the rectangle perpendicular to the building, determine the function in the variable x giving the area (in square feet) of the fenced-in region. area, as a function of x Tiffany makes some extra money selling vinyl's to teachers. She deposited the $1,245 extra money into an account that earned 3.7% interest that was compounded annually. If she didn't deposit any more money and didn't withdraw any, what would be her balance at the end of 42 months? in 2021, jillian's jade company had an operating profit of $521,728. interest expense for the year was $135,394, taxes paid were $172,706, and common stock dividends paid were $57,281. on its 2021 balance sheet, jillian's jade company listed 35,638 shares of common stock outstanding. calculate the earnings per share for jillian's jade company for 2021. what is the decimal value of the following binary number? 10011101 the normal boiling point for hbr is higher than the normal boiling point for hcl. this can be explained by question 16 options: a) larger dipole-dipole forces for hbr. b) larger dispersion forces for hbr. c) larger hydrogen-bond forces for hbr. d) larger dipole-dipole forces, larger dispersion forces, and larger hydrogen-bond forces for hbr. roughly what percent of human protein-coding genes are thought to be alternatively spliced? 16. how does the velocity of object 2 compare to object 1? what can you say about the direction they are traveling relative to one another? During the Cold War era, the United States and the Soviet Union were hesitant to go to war with each other because ofSelect one:a. the total destruction that would result from nuclear warb. their dependence on the Middle East for oilc. the threat of China to both nationsd. pressure from the United Nations who opposed another world war the ability to generate force at a fast speed is called? which of the following is not true of an atom that has an atomic number of 19 and a mass number of 41? group of answer choices the atom contains 22 neutrons. the atom is potassium. the atom contains 19 neutrons. the atom contains 19 electrons. the atom contains 19 protons. in which order are the transformations being applied here? if the reflection is applied first, if the shear is applied first, type s5a2 What effect would the knowledge of New Yorkers of a prior slave rebellion in the city in 1712 as well as Catos rebellion in Stono, South Carolina, in 1739 have had upon the accusations and trials of 1741? a nurse is reviewing medications while preparing to administer morning medications. list three (3) risk factors that can cause a decrease in medication effectiveness. from whose point of view is the story told-that is, through whose eyes do we see events unfold? what is the effect of o'connor's choice of narrator? 6 and 7 please !!!!!!!