in the chapter, we stated that the imine in this reaction is reduced. verify that this is the case by calculating the oxidation state of the c and n atoms of the cwn group before and after the reaction has taken place. does the imine gain electrons? if so, how many?

Answers

Answer 1

The imine gains two electrons, as the oxidation states of both the carbon and nitrogen atoms have decreased.

What are the before and after reactions of CN group ?

Before Reaction: The carbon atom in the CN group has an oxidation state of +3 and the nitrogen atom has an oxidation state of -3.

After reaction:  The carbon atom has an oxidation state of +2 and the nitrogen atom has an oxidation state of -2.

Reaction involvement: The reaction involves the loss of two electrons from the CN group, resulting in the oxidation states of both the carbon and nitrogen atoms decreasing. The transfer of electrons from the CN group to the imine results in the carbon atom in the CN group being reduced from +3 to +2 and the nitrogen atom being reduced from -3 to -2. This transfer of electrons is an oxidation-reduction reaction, as the oxidation states of both the carbon and nitrogen atoms have decreased.

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Related Questions

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

Answers

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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the trigylceride (c57h110o6) content of a blood sample is 125 mg in 10.0 ml. what is the molarity of the trigylceride?

Answers

0.19 mM is the molarity of the triglyceride , the trigylceride (c57h110o6) content of a blood sample is 125 mg in 10.0 ml

The molarity of the triglyceride in the blood sample is 0.19 mM.

To find the molarity, the mass of the triglyceride (125 mg) must be converted to moles.

Then divided by the volume of the blood sample (10.0 mL).

The conversion factor is obtained by dividing the molar mass of the triglyceride (862 g/mol) by 1000 to convert to milligrams:

125 mg / (862 g/mol / 1000) = 0.145 x 10^-3 mol

The molarity is then calculated as:

0.145 x 10^-3 mol / 10.0 mL = 0.19 mM

The trigylceride (c57h110o6) content of a blood sample is 125 mg in 10.0 ml,  0.19 mM is the molarity of the triglyceride ,

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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?

Answers

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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Which of the following would be the best way to model the Milky Way Galaxy?

Answers

It would be preferable to design the Milky Way Galaxy as a huge barred spiral galaxy.

The Milky Way is what?

The Milky Way makes it possible to examine a medium-sized spiral galaxy's functioning in great detail. Similar to how the sun provides the basis for our complete study of stars, it serves as the basis for our knowledge of what occurs within galaxies.

Can humans emigrate from the Milky Way?

The technology needed to move between galaxies is much beyond what humanity is now capable of, and it is currently solely the stuff of science fiction. Theoretically speaking, however, there is nothing that demonstrates definitively that interstellar travel is not feasible.

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What type of bond is a disulfide bridge?

Answers

A covalent type of bond is a disulfide bridge. The coupling of two thiols (-SH) groups results in the formation of a disulfide bond, which is a covalent link between two sulfur atoms (-S-S-).

What kind of molecule are disulfide bonds?

In biochemistry, a functional group with the formula RSSR′ is referred to as a disulfide. The connection, which is frequently created by the binding of two thiol groups, is also known as an SS-bond or occasionally as a disulfide bridge.

What other name would you give disulfide bonds?

Covalent bonds between two sulfur atoms are referred to as disulfide bonds, S-S bonds, disulfide bridges, and disulfide bonds. The majority of the cross-linkages in polypeptides are these.

A disulfide contains how many bonds?

Disulfide bond structures that are commonplace

Each IgG has 12 intra-chain disulfide bonds, each of which is connected to a specific IgG domain.

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will the amount of shielding increase, decrease, or stay the same as more valence electrons are added to the same energy level?

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The amount of shielding will generally increase as more valence electrons are added to the same energy level.

Shielding Effect

In atomic physics, shielding refers to the process by which inner electrons shield or screen the positively charged nucleus from the outer electrons. The more electrons there are in an energy level, the greater the shielding effect. As more valence electrons are added to the same energy level, the effective nuclear charge experienced by the outer electrons decreases, resulting in increased shielding. This increased shielding means that the electrons will experience a weaker attractive force from the nucleus, making it less difficult for them to be removed from the atom or molecule, and therefore increasing the stability of the electron configuration.

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a rigid plastic container holds 40.29 g of propane gas (c3h8) at a pressure of 860.6 torr. what is the pressure (in torr) if 6.41 g of propane is removed at constant temperature? enter to 1 decimal place.

Answers

The pressure of a rigid plastic container after removing 6.41 g of propane at constant temperature is 554.4 torr.

The pressure of a gas in a container depends on its volume and number of moles of gas, as described by the ideal gas law:

PV = nRT

where P is pressure, V is volume, n is the number of moles of gas, R is the gas constant, and T is temperature (assumed constant).

So, if 6.41 g of propane is removed from the container, the number of moles of gas will decrease, and the pressure will decrease as well.

To calculate the new pressure, we need to calculate the number of moles of propane in the container both before and after the removal, and then use the ideal gas law to find the new pressure.

First, we calculate the number of moles of propane before the removal:

n = m/M

where m is the mass of propane (40.29g) and M is its molar mass (312.01 + 81.01 = 44.09 g/mol).

n = 40.29 g / 44.09 g/mol = 0.9107 mol

Next, we calculate the number of moles of propane after the removal:

n = 6.41 g / 44.09 g/mol = 0.1455 mol

Finally, we use the ideal gas law to find the new pressure:

P1V1 = n1RT

P2V2 = n2RT

V1/V2 = n1/n2

P2 = P1 (n1/n2)

P2 = 860.6 torr × (0.9107 mol / 0.1455 mol)

P2 = 554.4 torr

The pressure after 6.41 g of propane is removed will be 554.4 torr.

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what is the hue associated with the color value hsl(90, 100%, 50%)? a. 90 b. 100% c. 50% d. cannot be determined by the color value

Answers

The color wheel has a scale of 0 to 360 for hue. Zero is red, 120 is green, and 240 is blue. The percentage value of saturation. 100% is the whole color, while 0% represents a particular grayscale.

The HSL color format is what?

Hue, saturation, and lightness, or HSL, is a cylinder-coordinate representation of color. Hue is measured as a degree on the color wheel (which ranges from 0 to 360); 0 (or 360) is red, 120 is green, and 240 is blue.

What number of hues does HSL support?

The three primary colors, R, G, and B, are the basic building blocks of all 16 million colors, albeit they are combined in various ratios. In a similar vein, the HSL color model allows you to produce the same 16 million hues.

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Aldehydes have a central carbon bound to two other carbons true false

Answers

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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what type of bonds does carbon typically form to create biomolecules?

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In order to make biomolecules like proteins and nucleic acids, carbon normally creates covalent bonds. Strong bonds known as covalent bonds are created when two atoms share electrons.

What uses does carbon serve?

Metal smelting makes use of impure carbon that takes the form of coke made from coal and charcoal made from wood. It is crucial for the steel and iron industries in general. Graphite is utilized in furnace cladding, electric motor brushes, and pencils. Activated charcoal is employed in filtering and purification processes.

Where can you find carbon?

The majority of the carbon on Earth is preserved in sedimentary deposits, with the remainder found in the oceans, sky, and living things.

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How many moles sulfuric acid are in 15.0 mL 6 M H₂SO4? Show work!
Mole sulfuric acid =???
Please help

Answers

Answer:

0.090 moles

Explanation:

The number of moles of sulfuric acid in 15.0 mL of 6 M H₂SO₄ can be calculated using the formula:

moles = concentration x volume

where concentration is in moles/liter and volume is in liters.

Since the volume of sulfuric acid is given in milliliters (15.0 mL), we first need to convert it to liters:

15.0 mL = 15.0 x 10^-3 L

Now, we can calculate the number of moles of sulfuric acid:

moles = 6 M x (15.0 x 10^-3 L) = 0.090 moles

So, 0.090 moles of sulfuric acid (6 M) are in 15.0 mL of 6 M H₂SO₄.

if the atomic mass is less than double the atomic number, then which is true about the majority of the isotopes? group of answer choices the number of protons is greater than the number of neutrons. the number of electrons is less than the number of protons. the number of protons and the number neutrons are the same. the number of protons is less than the number of neutrons. the number of electrons is less than the number of neutrons.

Answers

Option C: It is true for the majority of isotopes that the number of protons is less than the number of neutrons if the atomic mass is less than twice the atomic number.

An element is distinguished from another by its atomic number, which is based on how many protons it has. The total number of protons and neutrons determines an element's mass number.

The contemporary periodic table is set up so that each element has an increasing number of atoms, which leads to an increase in mass number. 

You see, electrons, protons, and neutrons make up one atom. The valency of the atom is determined by the number of electrons in the outermost shell. The atomic number and a mass number of the atom are also related to the number of protons and neutrons in an atom.

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the covalent bonds linking distant cysteine amino acid residues in protien tertiary structures is ?

Answers

A protein's main building blocks are amino acid residues connected through covalent peptide bonds. The preservation of tertiary structure is aided by covalent disulphide bridges (-S-S-), which connect cysteine residues.

What are some instances of covalent bonding?

The exchanging of electron pair between atoms occurs in covalent bonds. In contrast to polar covalent bonds, which are formed when electrons are exchanged between atoms with uneven electronegativity, orbitals shared between atoms with equal or very comparable electronegativity form nonpolar covalent bonds, such as H-H or C-H. (e.g., H–O).

What distinguishes ionic from covalent bonds?

Covalent and ionic bonds are the two basic types of bonds that an atom may form with other atoms. The exchange of electrons amongst two or more elements forms a covalent connection.

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What will happen to the rate if the concentration of B doubles, holding everything else constant?
А. Nothing
B. Doubles
C. Decreases by 1/2
D. Quadruples
E. Decreases by ¼

Answers

If the concentration of B doubles, the rate of reaction will also double while holding all other factors constant.

What is chemical reaction?

One set of chemical substances can change into another through a process known as a chemical reaction. It is distinguished by a chemical alteration that generates new compounds with distinct characteristics. The atoms and molecules that make up the reactants are rearranged during chemical reactions.

The concentration of the reactants has a direct relationship with the rate of a chemical reaction. The rate of reaction will likewise double if the concentration of B doubles. In other words, the concentration of each reactant directly affects the rate of reaction. Therefore, doubling the concentration of B will likewise twice the rate of reaction.

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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?

Answers

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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A competitive inhibitor of an enzyme is usually:A. a highly reactive compound.B. a metal ion such as Hg2+ or Pb2+.C. structurally similar to the substrate.D. water insoluble.E. a poison.

Answers

Typically, the substrate and a competitive enzyme inhibitor share structural similarities. The right answer is C).

What is an enzyme's straightforward definition?

A specific kind of biological catalyst called an enzyme is almost always a protein. It quickens a certain chemical reaction inside the cell. The enzyme is continuously employed during the process and is not destroyed.

What are the roles played by enzymes?

Enzymes assist in speeding chemical reactions inside the human body. Among many other functions, they are crucial for breathing, food digestion, and the health of the muscles and nerves .Each cell in the human body has a variety of enzymes. Each cell's internal chemical operations can be aided by enzymes.

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explain how the accelerometer and the emg electrodes work together to generate data on response time. how does graphical analysis 4 help you analyze this data?

Answers

An accelerometer and EMG (electromyography) electrodes work together to generate data on response time by measuring different aspects of a person's movement.

The accelerometer is a device that measures acceleration, or the rate of change of velocity. In this context, it can be used to measure the acceleration of a person's limb movement, providing information on the speed and direction of movement.

On the other hand, EMG electrodes are placed on the skin to detect the electrical activity generated by muscles. This electrical activity, known as an electromyogram (EMG), provides information on the contraction and relaxation of muscles during movement.

When combined, the data from the accelerometer and EMG electrodes can be used to determine a person's response time, or the time it takes for a person to initiate a movement in response to a stimulus. The data collected by the accelerometer provides information on the speed of movement, while the EMG data provides information on the activation of muscles during the movement.

Graphical analysis software, such as Graphical Analysis 4, can help you analyze this data by providing visual representation of the data collected from the accelerometer and EMG electrodes. The software allows you to plot the data over time, compare different movements, and identify patterns and trends in the data. This makes it easier to understand the relationship between the acceleration of movement and the activation of muscles, which is essential for analyzing response time.

In conclusion, the accelerometer and EMG electrodes work together to generate data on response time by measuring different aspects of movement, and graphical analysis software helps to analyze and visualize this data for a better understanding of the relationship between movement and muscle activation.

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a 25.00 ml solution containing 0.035 m sodium acetate is titrated with a 0.098 m solution of hcl. how many milliliters of hcl are required to reach the endpoint? type answer:

Answers

The quantity of HCl needed to attain the endpoint is 8.92 mL.

Considering the query,

We need to figure out how much HCl is needed to attain the goal.

We will first create a chemical equation for the reaction that is balanced.

The reaction's equilibrium chemical equation is

CH₃COONa + HCl → CH₃COOH + NaCl

This implies

It takes 1 mole of sodium acetate to neutralise 1 mole of HCl fully.

We shall now count the moles of sodium acetate that are present.

Using the equation

Number of moles = Volume Concentration

sodium acetate concentration = 0.035 M

sodium acetate volume = 25.00 mL = 0.025 L

The amount of sodium acetate present is 0.035 0.025 moles.

There are 0.000875 moles of sodium acetate present.

Now,

Since it takes 1 mole of sodium acetate to neutralise 1 mole of HCl

Then,

It would take 0.000875 moles of sodium acetate to completely neutralise 0.000875 moles of HCl.

∴ The required amount of HCl is 0.000875 moles.

The volume of 0.098 M HCl needed to attain the endpoint is next.

Using the equation:

[tex]volume=\frac{number.of moles}{concentration}[/tex]

The amount of HCl needed to attain the endpoint is=[tex]\frac{0.000875}{0.098}[/tex]

The amount of HCl needed to attain the endpoint is 0.00892857143L.

8.92857143 mL of HCl are needed to achieve the goal.

8.92 mL of HCl are necessary to attain the goal.

Consequently, 8.92 ml of HCl are needed to attain the goal.

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If a sample of gas occupies a volume of 4.50 L at 50°C and 90.0 kPa, what temperature would the gas be at if the pressure increases to 120.0 ka and the volume decreases to 1.50 L?

Answers

If a sample of gas occupies a volume of 4.50 L at 50°C and 90.0 kPa. 60°C would be the final temperature if the pressure increases to 120.0 ka and the volume decreases to 1.50 L.

What is ideal gas?

The ideal gas, sometimes known as the perfect gas, is a gas that, in physical behavior, corresponds to a certain idealized connection between pressure, volume, and temperature known as the ideal, or general, gas law.

This law is a simplification that includes both Boyle's and Charles' laws as special instances, and it asserts that for a given amount of gas, the product of volume V with pressure P is proportionate to absolute temperature T; that is, PV = kT, where k is a constant. This type of relationship for a material is known as its equation of state, and it is adequate to define its gross behavior.

P[tex]_1[/tex]×V[tex]_1[/tex]/T[tex]_1[/tex]=P[tex]_2[/tex]×V[tex]_2[/tex]/T[tex]_2[/tex]

substituting all the given values, we get

90.0×4.50/50=120.0×1.50/T[tex]_2[/tex]

T[tex]_2[/tex] = 60°C

Therefore, 60°C is the final temperature.

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imagine, you are boiling an egg. what would be the best method for raising the boiling point of water in a kettle by a few degrees celsius to have it done sooner?

Answers

Adding a solute to water can be an effective way to raise its boiling point and speed up the boiling process.

What is the method of raising boiling point?

To raise the boiling point of water in a kettle by a few degrees Celsius and have the boiling process done sooner, you could add a solute that can increase the boiling point of water. Some common solutes used for this purpose are salt (sodium chloride), sugar, and baking soda (sodium bicarbonate).

When a solute is added to water, it disrupts the hydrogen bonding between water molecules and requires more heat to convert the solution into steam. This increase in the energy required to boil the solution results in a higher boiling point.

For example, adding salt to water can increase its boiling point by about 1°C for each 58 g of salt per liter of water. However, it is important to note that adding too much solute can also reduce the solubility of the solute, and the solute may precipitate out of solution if the concentration becomes too high.

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what is the cause of the strange thermal properties of water? group of answer choices the molecule is very polar and so has multiple strong hydrogen bonds that hold the molecules together very strongly the fact that there are is a huge amount of it on earth and that it is gathered into the oceans the covalent bonds making up the water molecule which bind the atoms together very strongly

Answers

The thermal characteristics of water, so mystifying and exceptional, are brought about by the awe-inspiring power of hydrogen bonds between the water molecules.

Its distinct positive and negative poles foster the formation of bonds that are incredibly more robust than the average intermolecular interactions.

This hydrogen bonding not only leads to a high boiling and melting point but also results in a significant heat capacity and remarkable surface tension.

The abundance of water on our planet, collected into massive oceans, magnifies these extraordinary qualities, rendering water an indispensable component of life as we know it.

This hydrogen bonding mechanism, which underlies the strange thermal properties of water, continues to captivate scientists and spark wonder in the minds of all who study it.

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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?

Answers

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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3. which of the following is not true about the molecular ion in mass spectrometry? a) the molecular ion is produced by loss of one electron from the molecule. b) the mass of the molecular ion is equivalent to the mass of the molecule. c) the ion is produced by a loss of a pair of electrons from the molecule. d) the molecular ion is often unstable and can undergo fragmentation. e) none of these

Answers

a) the molecular ion is produced by the loss of one electron from the molecule is not true. The molecular ion is produced by the loss of a pair of electrons from the molecule, making it a positive ion. This process is known as electron ionization.

Key points:

Mass spectrometry is a technique used to determine the mass of a molecule and its fragments.The first step in mass spectrometry is the ionization of the molecule, which involves removing one or more electrons to create ions.The most common type of ionization in mass spectrometry is electron ionization, which involves removing a pair of electrons to create a positive ion. This positive ion is known as the molecular ion.The mass of the molecular ion is equivalent to the mass of the molecule.The molecular ion is often unstable and can undergo fragmentation. This fragmentation process provides information about the structure of the molecule.

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jamila makes zinc sulfate
she uses an acid and zinc metal
the diagram shows the stages jamila uses to make zinc sulfate
the stages are not in the correct order

Answers

The diagram shows the stages jamila uses to make zinc sulfate and the stages in the correct order include the following below:

Add excess zinc to the acid then gently heat.Filter the reaction mixture.Dry the zinc sulfate with filter papers.Heat the filtrate to concentrate the solution.Leave the filtrate to evaporate slowly.

What is Filtration?

This is referred to as a process used to separate solids from liquids or gases using a filter medium.

In the formation of zinc sulfate, the zinc is usually added to concentrated H₂SO₄ and filtered with the use of filter paper through several techniques to ensure that the filtrate is dry and concentrated.

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Enzymes lower the activation energy required for a reaction without altering the cellular _______________, which would harm the cell.
a. Oxidants
b. Temperature
c. CO2
d. Triglycerides

Answers

Enzymes improve metabolic activity and protect the cell from harm by lowering the activation energy required for a process without altering the cellular temperature. The best choice is B.

What happens when the activation energy of enzymes is reduced?

By reducing energy and stabilizing the very energetic unstable transition state, enzymes (blue line) alter the creation of the transition state. This not only speeds up the reaction time but also makes the reverse reaction more likely.

What causes a reaction's activation energy to decrease?

Lower activation energies are possible with enzymes. The activation energy required to change a reagent into a product is decreased by enzymes.

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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.

Answers

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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2. a mixture contains 0.4 grams of ammonium chloride, 1.0 grams of salt, and 1.6 grams of sand. what is the percentage by mass of each component of the mixture?

Answers

The percentage by mass of ammonium chloride is  13.33%. The percentage by mass of salt is  33.33%. The percentage by mass of sand is  53.33%.

Percentage Composition of a Mixture

A mixture is made up of different components and it is important to determine the proportion of each component in the mixture. This can be determined by calculating the percentage by mass of each component. The percentage by mass of a component is found by dividing the mass of the component by the total mass of the mixture and multiplying the result by 100. The total mass of the mixture is calculated by summing up the masses of all the components. In this way, we can determine the proportion of each component in the mixture, expressed as a percentage of the total mass. This information can be useful in various fields such as chemistry, pharmacy, and food science, to name a few.

To find the percentage by mass of each component in the mixture, we need to divide the mass of each component by the total mass of the mixture and multiply by 100.

The total mass of the mixture is 0.4 grams + 1.0 grams + 1.6 grams = 3.0 grams.

The percentage by mass of ammonium chloride is (0.4 grams / 3.0 grams) * 100 = 13.33%.

The percentage by mass of salt is (1.0 grams / 3.0 grams) * 100 = 33.33%.

The percentage by mass of sand is (1.6 grams / 3.0 grams) * 100 = 53.33%.

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in what category are the eicosanoids, based on chemical structure?

Answers

Eicosanoids are a subclass of oxylipins, which are oxidized fatty acids with a variety of carbon unit lengths. They differ from many other oxylipins by having a disproportionately large role as cells signaling molecules.

What exactly is eicosanoids and what tasks do they do?

The lipid-based signaling molecules known as eicosanoids have a special function in innate immune responses. The many eicosanoids, including prostaglandins and leukotrienes, enable the immune cell cells to react to bacterial intruders quickly.

What kinds of substances are eicosanoids?

The hormones (PG), thrombin (TX), thromboxanes (LT), and lipoxins are eicosanoids (LX). These substances can be categorized as autocrine/paracrine hormones because they virtually invariably affect the cells that make them or nearby cells, i.e., over small distances and times.

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on a phase diagram, the critical temperature is . question 20 options: a) the temperature required to cause sublimation of a solid b) the temperature at which all three states are in equilibrium c) the temperature below which a gas cannot be liquefied d) the temperature above which a gas cannot be liquefied e) the temperature required to melt a solid

Answers

the critical temperature is, the temperature above which a gas cannot be liquefied.

What's the temperature at which something is critical?

The greatest temperature at which a substance may exist as a liquid is known as the temperature of the substance.The substance at question (in its vapour or gaseous state) cannot be liquefied at temperatures higher than the critical temperature, no matter how much pressure is applied.

What is the critical point of sublimation?

The evaporation critical point is the highest or lowest temperature and pressure at which the state of the substance could be changed.

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calculate the grams of indicated product when 18.0 g of the first reactant and 10.0 g of the second reactant are used. 4Li(s)+O2(g)→2Li2O(s) Calculate the mass of Li2O.

Answers

According to law of conservation of mass, the mass of product is sum of reactants which is 10+ 18= 28 grams.

What is law of conservation of mass?

According to law of conservation of mass, it is evident that mass is neither created nor destroyed rather it is restored at the end of a chemical reaction .

Law of conservation of mass and energy are related as mass and energy are directly proportional which is indicated by the equation E=mc².Concept of conservation of mass is widely used in field of chemistry, fluid dynamics.

Law needs to be modified in accordance with laws of quantum mechanics under the principle of mass and energy equivalence.This law was proposed by Antoine Lavoisier in the year 1789.

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