The weight percent of NaBr in this solution is 150% and the mole fraction of NaBr in this solution will be 1.5.
Weight percent is a measure of the amount of solute (in this case, NaBr) in a solution relative to the total weight of the solution.
Weight percent (w/w) = (mass of solute / total mass of solution) x 100
In this case, the solution is 1.5 M NaBr, so we can calculate the mass of the solute:
mass of solute = molarity x molecular weight of solute
mass of solute = 1.5 M x 102 g/mol
mass of solute = 153 g
The total mass of the solution calculated as:
total mass = mass of solute / molarity
total mass = 153 g / 1.5 M
total mass = 102 g
Now we calculate the weight percent:
Weight percent (w/w) = (mass of solute / total mass of solution) x 100
Weight percent (w/w) = (153 g / 102 g) x 100
Weight percent (w/w) = 150%
The mole fraction of a solute is the ratio of the number of moles of the solute to the total number of moles in the solution.
The number of moles of NaBr can be calculated as:
number of moles of NaBr = mass of NaBr / molecular weight of NaBr
number of moles of NaBr = 153 g / 102 g/mol
number of moles of NaBr = 1.5 mol
And the total number of moles in the solution can be calculated as:
total number of moles = number of moles of NaBr / molarity
total number of moles = 1.5 mol / 1.5 M
total number of moles = 1.0 mol
Now we calculate the mole fraction:
Mole fraction = 1.5 mol / 1.0 mol
Mole fraction = 1.5
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you mix 2 moles of hbr with 3 moles of koh in enough water to make 1 l of solution. how much kbr do you expect to make?
2 moles of KBr are created when two moles of HBr and 3 moles of KOH are combined with just enough water to produce one liter of solution.
Describe a mole.The amount of a substance that consists of 6.022 X 1023 of its component parts, such as particles, atoms, ions, molecules, etc., is called a mole. A mole is the measurement unit for measuring atoms, molecules, or ions.
According to the balanced chemical reaction for the reaction among HBr and KOH:
HBr + KOH → KBr + H2O
1 mole of HBr interacts with 1 mol of KOH to produce one mole of KBr, as can be seen. As a result, if 2 mole of HBr and 3 moles of KOH are combined, the entire HBr will react while just 2 moles of KOH are used. As a result, you can anticipate producing Two moles of KBr.
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Need ASAP
Double Replacement Net Ionic Equation: write the net ionic
equation for the following double replacement reactions.
16. 1 AlCl3 + 2AgNO3
17. NaOH + MgBr2
The net ionic equations of the double replacement reactions are:
6 Ag⁺ (aq) + 6 Cl⁻ (aq) ---> 6 AgCl (s)
Ionic equations are types of chemical equations that solely display the ions involved in a process. In other words, the ions that combine in a solution to react and create new materials The other ions are referred regarded as spectator ions because they don't take part.
The chemical equation known as the net ionic equation only displays the elements, compounds, and ions directly involved in the chemical reaction.
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If you have 1.0 moles of each compound, which will have the greater mass?
A. NBr3
B. H3PO4
C. Fel3 D.KF
NBr3 has the highest mass due to its greatest molecular mass. Therefore, option (a) is correct.
What is the molecular mass?The molecular mass is calculated by summing the atomic masses of all the atoms in the molecule. Find each element's atomic mass using the mass stated in the Periodic Table.
The molecular mass of NBr3 is:
1 x 14.01 g/mol (for nitrogen) + 3 x 80.92 g/mol (for bromine) = 227.75 g/mol
The molecular mass of H3PO4 is:
3 x 1.01 g/mol (for hydrogen) + 1 x 31.97 g/mol (for phosphorus) + 4 x 16.00 g/mol (for oxygen) = 97.98 g/mol
The molecular mass of FeCl3 is:
1 x 55.85 g/mol (for iron) + 3 x 35.45 g/mol (for chlorine) = 126.80 g/mol
The molecular mass of KF is:
1 x 39.10 g/mol (for potassium) + 1 x 19.00 g/mol (for fluorine) = 58.10 g/mol
Therefore, NBr3 has the greatest molecular mass.
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provide an acidic or basic environment to optimize digestion is meaning of?
Optimizing digestion by creating a acidic or a basic environment entails changing the digestive system's pH to the level most conducive to the rapid food's breakdown into its constituent molecules.
What does a molecule mean in general terms?The smallest recognizable unit that a pure substance may be divided while retaining its structure and chemical properties is a molecule, which is a collection of two or more atoms.
How do molecules differ from atoms?Single, neutral particles make up an atom. As neutral objects consisting of 2 or more atoms joined together, molecules are. A positively charged or negatively charged particles are called ions.
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Aldehydes have a central carbon bound to two other carbons true false
False. There isn't always a core carbon bonded to two additional carbons in aldehydes.
What are carbon bonds?Chemical bonds between carbon atoms are referred to as carbon bonds. Carbon atoms can create up to four covalent bonds with other atoms, including hydrogen, oxygen, nitrogen, sulphur, and other carbon atoms, and they have four valence electrons.
An organic substance classified as an aldehyde has a carbonyl functional group (C=O) at the end of the carbon chain. This functional group is denoted by the symbol -CHO and consists of a carbon atom double-bonded to an oxygen atom. From straightforward one-carbon aldehydes like formaldehyde to longer chain aldehydes with multiple carbon atoms, aldehydes can have a variety of carbon chain lengths.
However, the presence of the carbonyl functional group, not the quantity or configuration of other carbon atoms, is what distinguishes an aldehyde from other organic compounds.
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olubility is select one: a. the amount of solute that will dissolve in a given amount of solvent, regardless of temperature b. the amount of solvent that will dissolve a given amount of a solute at any temperature c. the process of dissolving a solute in a solvent d. the amount of solute that will dissolve in a given amount of solvent at a certain temperature
A quality known as solubility describes a substance's capacity to dissolve in a solvent. It is limited in terms of the maximum amount of solute that may be balanced dissolved in a solvent.
What is a solubility?
The ability of a material, the solute, to combine with another substance, the solvent, is known as solubility in chemistry. Insolubility, or the solute's inability to create such a solution, is the opposite attribute.
The concentration of the solute in a saturated solution—a solution in which no more solute can be dissolved—is typically used to gauge the degree of a substance's solubility in a particular solvent. The two compounds are said to be at the solubility equilibrium at this time. There might not be a limit for some solutes and solvents, in which case the two are referred to as "miscible in any quantities."
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arbon-14 has a half-life of 5720 years and this is a first-order reaction. if a piece of wood has converted 11.5% of the carbon-14, then how old is it?
Carbon-14 has a half-life of 5720 years and this is a first-order reaction. if a piece of wood has converted 11.5% of the carbon-14, then is it 1008 years old
Half-life - 5720 years
The amount of time needed for the reactant concentration to drop to half its initial value is known as a reaction's half-life. A constant connection to the reaction's rate constant is the half-life of a first-order reaction: t1/2 = 0.693/k
The rate constant, k = 0.00012 year⁻¹
11.5 % is decomposed which means that 0.115 of is decomposed. So
At/Ao = 0.885
0.885=e^-0.00012*t
T= 1008 years
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what is true about polysaccharides? group of answer choices polysaccharides cannot be branched. the hydroxyl groups of polysaccharides cannot be modified, they only are able to participate in hydrogen bonding. if a covalent glycosidic bond forms at the anomeric carbon, then the structure is fixed and the bond can be labeled alpha or beta. polysaccharides are much shorter than oligosaccharides. polysaccharides are formed between straight-chain forms of monosaccharides
The true statement about polysaccharides is ,"if a covalent glycosidic bond forms at the anomeric carbon, then the structure is fixed and the bond can be labeled alpha or beta".
Polysaccharides are defined as large molecules that are made up of many monosaccharides and disaccharides linked together with the help of glycosidic bonds.
These polysaccharides are macromolecules or polymers because they are made up of a large number of monomers (poly means many).
In these molecules, the joining bond is a covalent bond called the glycosidic bond. It is formed between the anomeric carbon (C1) of one monomer with the carbon (C4 or C6) of another monomer.
Once this bond is formed, the two monomers are said to be linked together.
The formation of this bond is an example of a condensation reaction or dehydration synthesis because a water molecule is released.
This bond is labeled as an alpha bond if it is directed towards the upside of the anomeric carbon and it is labeled as beta if this direction is towards the downside of the anomeric carbon. Hence, option B is correct.
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water consists of one oxygen atom joined to two hydrogen atoms by what type of bonds?
Answer:
Explanation:
Water consists of one oxygen atom joined to two hydrogen atoms by covalent bonds. In a covalent bond, atoms share electrons to form a stable bond. In the case of water, each hydrogen atom shares one electron with the oxygen atom, forming two covalent bonds between the oxygen and hydrogen atoms.
These covalent bonds are polarized, with the oxygen atom having a partial negative charge and the hydrogen atoms having partial positive charges. This polarization contributes to the properties of water, such as its high surface tension and its ability to dissolve ionic and polar substances.
In conclusion, water consists of one oxygen atom joined to two hydrogen atoms by covalent bonds.
A fossilized egg from an extinct species of dinosaur has been discovered. One scientists claims that using C-14 dating methods can easily determine the approximate age of the fossil. Which statement correctly supports or refutes this claim? Responses A This claim is accepted because all living organisms contain carbon.This claim is accepted because all living organisms contain carbon. B This claim is refuted because C-14 dating cannot be used for fossils over 100,000 years old since it has a relatively short half-life.This claim is refuted because C-14 dating cannot be used for fossils over 100,000 years old since it has a relatively short half-life. C This claim is refuted because C-14 can only be used for living organisms, and the fossil of the egg is nonliving.This claim is refuted because C-14 can only be used for living organisms, and the fossil of the egg is nonliving. D This claim is accepted because dinosaurs have been extinct for less than one million years, indicating that enough of the C-14 is left in th
The half life of carbon -14 is 5730 years that is very small time compared to the age of dinosaurs. Therefore, This claim is refuted because C-14 dating cannot be used for fossils over 100,000 years old since it has a relatively short half-life.
What is carbon -dating ?There are many radioactive isotopes of elements which undergo nuclear decay by the emission of charged particles such as alpha or beta. Nuclear decay is a first order reaction and the time of decay can be determine if the half life of the isotope is known.
Half life of a radioactive isotope is the time for the decay of half of the initial amount of the sample. Carbon -14 is a radioactive isotope of carbon with a half life of 5730 years.
Dinosaurs were lived in the earth about 100 -50 million years ago. Therefore, carbon -14 is not at all sufficient to determine the age of fossils of dinosaurs. Hence, option B is correct.
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a barometric pressure of 1021.0 millibars is equal to how many inches of mercury?
1021 millibars of barometric pressure is equivalent to 30.5 inches of mercury.
Define the element mercury.Mercury is a chemical element with an atomic number '80' and the symbol 'Hg'. Quicksilver is another name for it. The only metallic element that is referred to be liquid at room temperature and pressure is mercury. It is a substantial, metallic d-block element.
What are the three primary uses for mercury?Mercury can be used to create barometers, thermometers, as well as other scientific instruments. Because mercury conducts electricity, it can be used to make silent, position-sensitive switches. Mercury vapor is used in streetlight, florescent lighting, and billboards.
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the atomic mass of nitrogen is 14 g/mol. the atomic mass of hydrogen is 1 g/mol. when the reaction produces 68 grams of ammonia, how many grams of nitrogen were present initially?
When the reaction creates 68 grams of ammonia from 56 grams of nitrogen in the beginning.
When nitrogen has an atomic mass of 14, how much heavier would ammonia molecules be?Since there are 3 hydrogen atoms and 1 nitrogen atom in ammonia (NH3), we may calculate nitrogen's atomic mass by adding the molar masses of the two atoms. In this case, nitrogen weighs 14 and hydrogen, 3x1=3, making 14+3=17g.
With an atomic mass of 14, how many additional electrons are required for a nitrogen atom to have its outermost electron shell complete?Since each nitrogen atom needs three electrons to fill its outermost shell, nitrogen atoms will establish three covalent bonds (also known as triple covalent) between two nitrogen atoms.
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enzymes are catalysts that increase the rate of reactions by
By lowering the activation energy and consequently raising the rate of reaction, enzymes (and other catalysts) work.
What does it signify when an enzyme reduces a reaction's activation energy?By lowering the amount of energy required for reactants to combine and react, enzymes often lower activation energy. As an illustration, enzymes bring reactants to close so they don't have to waste energy dispersing themselves until they randomly collide.
Which of the following describes how activation energy is reduced by enzymes?The enzyme's ability to bind to two substrate molecules and precisely position them to promote a reaction is one way the activation energy is reduced.
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which of the following examples illustrates a number that is correctly rounded to three significant figures? 4.05438 grams to 4.054 grams 109 526 grams to 109 500 grams 0.03954 grams to 0.040 grams 20.0332 grams to 20.0 grams 103.692 grams to 103.7 grams
The number that is correctly rounded to three significant figures is 0.03954 grams to 0.040 grams.
The first step in rounding to significant figures is to determine how many significant figures the original number has. In this case, 0.03954 grams has 5 significant figures.
To round to 3 significant figures, you must look at the 4th digit (5). If this digit is 5 or greater, the 3rd digit is rounded up (0.040 grams). If this digit is less than 5. the 3rd digit is left unchanged (0.039 grams).
The final answer of 0.03954 grams rounded to 3 significant figures is 0.040 grams.
water is polar due to its bent structure and an unequal sharing of electrons. water is nonpolar due to its linear structure and unequal sharing of electrons. the slightly negative oxygen atom of one water molecule is attracted to the slightly positive hydrogen atom of another water molecule.
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a solution of 1.00 g of the enzyme in 60.0 ml of benzene has an osmotic pressure of 8.95 mm hg at 27oc. what is the molecular weight of the enzyme?
The molecular weight of the enzyme is approximately 60,800 g/mol.
The osmotic pressure of a solution can be related to the concentration of solute particles in the solution, and the molecular weight of a solute can be related to its concentration and the osmotic pressure of a solution.
The formula for osmotic pressure is given by:
Π = MRT
where Π is the osmotic pressure (in mm Hg),
M is the molar concentration of solute particles, R is the gas constant
([tex]0.0821 L \ atm K^{-1} mol^{-1}[/tex]), T is the temperature in
kelvins (27 °C = 27 + 273.15 = 300 K),
and M is the molecular weight of the solute.
Rearranging the equation to solve for M:
M = Π / (RT)
Substituting the given values:
M = 8.95 mm Hg / ([tex]0.0821 L \ atm K^{-1} mol^{-1}[/tex] [tex]\times 300K[/tex])
M = 8.95 * 10^-3 atm / (0.0821 * 300)
M = 8.95 * 10^-3 atm / 24.63
M = 0.000365 mol/L
To convert molar concentration to weight/volume, we need to divide by the number of moles of solute per liter:
0.000365 mol/L = 0.000365 * M / 1000 g/L
Therefore,
M = 0.000365 * M / 1000
M = 0.365 g/L
Finally, we need to divide by the volume of the solution to get the weight/volume concentration:
0.365 g/L = 0.365 g / 60.0 mL
=> 0.00608 g/mL
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Water in an ice cube tray is put into the freezer section of a refrigerator. As it freezes, this water —
loses all entropy or decreases in entropy?
The supplied assertion states that this water loses entropy as it freezes.
What is an easy way to define entropy?The amount of energy per unit of temperatures in a system that cannot be used to carry out beneficial work is known as entropy. Entropy is a function of a system's molecular disorder or unpredictability since work is produced by organized molecular motion.
Which model best explains entropy?Entropy can be thought of as a rough indicator of the quality of energy, with lower entropy indicating higher quality. Less entropy energy is stored in an organized manner (the efficient library). The spontaneous library stores energy in a chaotic manner, which has a high entropy.
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you need to determine the mass of an aqueous solution. you determine the mass of your 10.0 ml graduated cylinder to be 23.176 g. after adding a volume of 3.29 ml of solution to the cylinder, you reweigh it and determine the new mass to be 26.451g. what is the mass of the aqueous solution in grams?
The mass of the aqueous solution that is added to the graduated cylinder was found to be 3.275 g.
The volume of the graduated cylinder = 10.0 mL
Volume of aqueous solution added to the cylinder = 3.29 mL
The initial mass of the graduated cylinder = 23.176 g
The mass of the graduated cylinder after aqueous solution was added or final mass = 26.451 g
In order to find the mass of the aqueous solution only, the initial weight of the graduated cylinder has to be subtracted from its final weight.
Therefore, mass of aqueous solution = (26.451 – 23.176) g = 3.275 g
The mass of the aqueous solution was found to be 3.275 g.
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the heat capacity of the calorimeter is the amount of heat necessary to raise the temperature of the apparatus (the cups and the stopper) by 1 k . calculate the heat capacity of the calorimeter in j/k .
The heat capacity of the calorimeter is the amount of heat necessary to raise the temperature of the apparatus (the cups and the stopper) by 1 K.
To calculate the heat capacity of the calorimeter in J/K , you need to know the mass of the apparatus and the specific heat of the material used in the apparatus. The heat capacity is then calculated by multiplying the mass of the apparatus by the specific heat of the material and the change in temperature (1 K).
For example, if the mass of the apparatus is 200 g and the specific heat of the material is 0.75 J/gK, the heat capacity of the calorimeter is 150 J/K.
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as you move across a period, you will recall that the radius decreases. why do you think a decrease in atomic radius would result in a greater ionization energy?
The positive nuclear charge requires more ionization energy due to the electrons' increased distance from it due to the smaller radius.
Why do you suppose a bigger atomic radius would have a bigger ionization energy?Generally speaking, the easier it is for an electron to be evacuated, the farther it is from the nucleus. The amount of energy needed to remove the electron from the outermost orbital decreases with increasing atomic radius; this is known as the ionization energy function.
What causes the ionization to diminish with time?Ionization energy drops off within a group. The outer electrons are less securely confined because they are further from the nucleus.
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a se atom has a mass number of 78 . determine the number of neutrons, protons, and electrons in this neutral isotope.
A Se atom with a mass number of 78 has 34 neutrons, 34 protons, and 34 electrons.
The mass number of an isotope is the sum of the number of protons and neutrons in its nucleus. The number of electrons in a neutral atom is equal to the number of protons.
The number of neutrons in a Se atom with a mass number of 78 can be calculated as follows:
Number of neutrons = Mass number - Number of protons
Since the atomic number of Se is 34, the number of protons in the Se atom is 34. Therefore:
Number of neutrons = 78 - 34 = 44
Therefore, a Se atom with a mass number of 78 has 34 protons, 44 neutrons, and 34 electrons.
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True or False. Orbitals are a delocalized cloud of electron density.
False. A delocalized cloud containing electron density makes up orbitals. An electron from the valence band or ion that would be delocalized is one that is not bound to another atom a covalent bond.
How do covalent bonds work?A covalent bond is formed when two atoms exchange one or more sets of electrons. The two protons and neutrons are concurrently drawing these electrons to them. When there is a difference in the ionization energy of two atoms, a covalent connection is created.
What three kinds of covalent bonding are there?Single hydrogen bonding, double hydrogen bonding, and triple side chains are the three varieties of covalent bonds. One sigma and one pi link make up a double covalent bond, while two pi but one sigma binding make up a triple covalent bond.
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how many electrons can cobalt lend or borrow
As a result, compared to a proton or neutron, an electron is thought to be almost massless. Therefore, cobalt can loose 3 electrons to become Co³⁺.
What is electron?The electron is the lightest known stable subatomic particle. It has a negative charge that is equivalent to 1.602176634 coulombs, which is regarded as the fundamental building block of electric charge.
9.1093837015 ×10³¹ kg, or just 1/1,836 the mass of a proton, is the rest mass of an electron. As a result, compared to a proton or neutron, an electron is thought to be almost massless, and its matter is not taken into account when determining an atom's mass number. Cobalt can loose 3 electrons to become Co³⁺.
Therefore, cobalt can loose 3 electrons to become Co³⁺.
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Cobalt is a transition metal . Hence, it can show variable oxidation state. It contains 9 valence electrons. It can lend 1, 2 or 3 electrons. As an electropositive element cobalt do not borrow electrons from other atoms.
What is cobalt ?Cobalt is 27th element in periodic table. It is located in d-block of the table and it is a transition metal. The significant feature of transition metal is that, all of them exhibit a variable oxidation state.
Cobalt contains 27 electrons and out of which 9 are valence electrons in 4s and 3d orbitals. These can be participated in bonding. Cobalt can donates its 1 or two valence electrons from the 4s orbital.
Similarly it can donate one electron from the 3d orbital as well. Therefore, the most common oxidation states of Co are +1, +2, and +3. Cobalt does not borrow electrons from other atoms since it is an electropositive element.
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Suppose you have 100.00 mL of a solution of a dye and transfer 2.00 mL of the solution to a 100.00-ml volumetric flask. After adding water to the 100.00 mL mark, you take 5.00 mL of that solution and again dilute to 100.00 mL. If you find the dye concentration in the final diluted sample is 0.000158 M, what was the dye concen. tration in the original solution?
The initial dye solution concentration was found to be 0.158M
How do I figure out a solution's concentration?Subtract the solute's mass from the total volume of the solution. Considering m as the solute's mass and V as the total volume of the solution, write out the equation C = m/V. To determine the concentration of your solution, divide the mass and volume measurements you acquired and plug them in.
The final flask contain dye concentration = 0.000158 M = C3
The original dye solution concentration = C1
First dilution:
2 mL of dye solution transfer to second 100mL flask
C1v1 = C2v2
=> C1 x 2 = C2 x 100mL
Second dilution:
5 mL of dye solution from second to third flask (100mL)
C2v2 = C3v3
=> C2 x 5 = 0.000158 x 100
C2 => 0.00316M
C1 => 0.00316 x 100/2
=> 0.158M
Dilution factor: what is it?The stock solution is diluted by a phenomenon called the dilution factor. As indicated in the equation above, it can be expressed as the fraction of the volume of the final diluted solution (V2) to the original volume taken from the stock solution (V1).
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CH3 -CH=CHC-CHCH3 The wittig reaction can be used for the synthesis of conjugated dienes. propose a combination of wittig reagent and aldehyde/ketone that can be used to synthesize the double bond labeled b in this structure.
By combining a Wittig reagent and an aldehyde or ketone, the conjugated diene in CH3-CH=CH-C-CHCH3 can be synthesised using the Wittig reaction.
What is wittig reagent?Georg Wittig is the name of the creator of the Wittig reagent, a type of chemical reagent used in organic chemistry. It typically consists of a phosphonium salt with two alkyl or aryl groups attached and a positively charged phosphorus atom.
The double bond is created when the Wittig reagent, usually a ylide, interacts with the aldehyde or ketone to create an alkene. Pent-2-enal is an illustration of an appropriate aldehyde or ketone for this reaction. The process of the reaction involves the ylide deprotonating the aldehyde or ketone to create an intermediate carbanion, which then combines with the phosphorus atom of the ylide to create an alkene. The position of the initial carbonyl group in the starting material is matched by the double bond in the finished product.
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What is triple point?
Answer:
In thermodynamics, the triple point of a substance is the temperature and pressure at which the three phases (gas, liquid, and solid)
if an antacid tablet is initially dissolved in 50.0 ml of 0.10 m hcl and it needs 12.5 ml of 0.10 m naoh to reach the endpoint of the titration, how many moles of hcl were neutralized by the antacid tablet?
HCl were neutralized by the antacid tablet at [tex]3.75 moles.[/tex]
Stomach ulcers, bloating, and acid reflux are all conditions that are treated with antacid tablets. By easing symptoms like gastrointestinal discomfort or irritability, it aids. Additionally, it aids in balancing and letting go of extra gas in the stomach.Titration is a typical laboratory technique for quantitative chemical analysis used to calculate the concentration of a specified analyte. A standard solution with a defined concentration and volume is created as the reagent, also known as the titrant or titrator.
The formula: may be used to figure out how many moles of HCl the antacid pill neutralised:
[tex]Moles HCl = (volume HCl x molarity HCl) - (volume NaOH x molarity NaOH)\\Moles HCl = (50.0 mL x 0.10 mol/L) - (12.5 mL x 0.10 mol/L)\\Moles HCl = 5.0 - 1.25\\Moles HCl = 3.75 mol[/tex]
[tex]3.75 mol[/tex] of hcl were neutralized by the antacid tablet.
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Since you can write a balanced chemical equation, you can also utilize your stoichiometry for these neutralization reactions. You mix 1 mole of HNO3 with 1 mole of NaOH in enough water to make 1 L of solution. What do you expect the final pH of the solution to be? Hint: Think about what is in your beaker after the reaction has run to completion: 1) Is there any of the original acid left?2) Is there any of the original base left? 3) Do you expect any of your products to act as an acid or a base? A. pH < 7 B. pH > 7 C. pH = 7
The PH of the solution will be equal to 7 as the reaction of hydrogen bromide and nitric acid is a neutralization reaction.
i[tex]HNO_{3}+NaOH[/tex]⇒[tex]NaNO_{3} + H_{2} O[/tex]this reaction, sodium hydroxide, a base, reacts with nitric acid, an acid, to produce sodium nitrate, a salt, and water. As a result, it is aa neutraneutralizationneutraneutralizationlizationlization reactionreactiona . As a result, nitric acid acts as an acid in the reaction.
Sodium hydroxide reacts with nitric acid to form sodium nitrate salt and water, according to the given equation. This is an illustration of a neutralisation reaction.
Nitric acid is a one normal solution, which means that for every mole of [tex]HNO_{3}[/tex], one mole of [tex]H^{+}[/tex] or acid is liberated, which must be neutralised with one mole of hydroxide [tex]OH^{-}[/tex] . All pH neutralisation reactions are exothermic, which means that heat is produced.
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What happens to the speed of particles as you change the temperature in the module?
The speed of particles changes as you change the temperature in the module.
When the temperature is increased, the speed of the particles increases, but when the temperature is decreased, the speed of the particles decreases.
What is the relationship between temperature and the speed of particles?The temperature and the speed of particles are directly related to each other.
When the temperature of a substance is increased by the addition of heat, the speed of the particles will increase as a result of the increase in the kinetic energy of the particles.
However, when the temperature of a substance is decreased by the removal of heat, the speed of the particles will decrease as a result of the decrease in the kinetic energy of the particles.
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water is a liquid at room temperature. this is due to
At ambient temperature, water is a liquid because of the strong hydrogen bond that forms between the H and O of neighboring water molecules and the close packing of the water molecules.
At room temperature, what causes water to be a liquid?between the molecules of water, hydrogen bonds. At temperatures normally seen on the surface of the Earth, including ambient temperature, hydrogen bonds between the molecules of water keep water in a liquid form.
Is hydrogen bonding in water what causes it to be liquid at ambient temperature?Since the nearby hydrogen atoms are partly positive species and have high electronegativity, they can only form a weak hydrogen bond with the oxygen atom in water. D is the right answer, thus. cohesive forces caused by water's hydrogen bonds.
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black coffee has a ph of about 5, and orange juice has a ph of about 3. how big is the difference in acidity between these two common drinks?
Black coffee has the pH of about 5, and the orange juice has the pH of about 3. The orange juice is 100 time more acidic than the black coffee.
For the orange juice :
pH = - log [H⁺]
3 = - log [H⁺]
-3 = log [H⁺]
[H⁺] = 0.001 M
For coffee:
pH of coffee = 5
The Hydrogen ion concentration [H⁺] = ?
pH = - log [H⁺]
5 = - log [H⁺]
-5 = log [H⁺]
[H⁺] = 0.00001 M
[H⁺] for orange juice / [H⁺] for coffee = 0.001 / 0.00001
[H⁺] for orange juice / [H⁺] for coffee = 100
This means that the orange juice is 100 times more acidic than the black coffee.
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