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6. The density of an aqueous solution of nitric acid is 1.6 g/mL and the concentration is 2.18 M. What is the concentration of this solution in m?

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Question 7

The density of an aqueous solution of nitric acid is 1.47 g/mL and the concentration is 2.28 m. What is the concentration of this solution in molarity?

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Question 8

The density of an aqueous solution of nitric acid is 2.14 g/mL and the concentration is 3.55 M. What is the concentration of this solution in mole fraction?

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Question 9

The density of an aqueous solution of nitric acid is 1.6 g/mL and the concentration is 3.03 M. What is the concentration of this solution in percent by mass?

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Question 10

The vapor pressure of water at 45oC is 71.88 mmHg. What is the vapor pressure of a sugar (C12H22O11) solution made by dissolving 49.78 g of sugar in 88.61 g of water?

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Question 11

The vapor pressure of water at 65oC is 187.54 mmHg. What is the vapor pressure of a ethylene glycol (CH2(OH)CH2(OH)) solution made by dissolving 20.32 g of ethylene glycol in 81.22 g of water?

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Question 12

What is the boiling point of water made by dissolving 19.35 g of ethylene glycol (CH2(OH)CH2(OH)) in 90.42 g of water? The boiling-point elevation constant of water is 0.52 oC/m.

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Question 13

What is the boiling point of water made by dissolving 12.23 g of magnesium chloride in 85.48 g of water? The boiling-point elevation constant of water is 0.52 oC/m.

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Question 14

What is the boiling point of water made by dissolving 20.83 g of sodium chloride in 86.33 g of water? The boiling-point elevation constant of water is 0.52 oC/m.

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Question 15

What is the boiling point of water made by dissolving 42.48 g of sugar (C12H22O11) in 92.10 g of water? The boiling-point elevation constant of water is 0.52 oC/m.

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Question 16

What is the freezing point of water made by dissolving 23.09 g of ethylene glycol (CH2(OH)CH2(OH)) in 94.24 g of water? The freezing-point depression constant of water is 1.86 oC/m.

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Question 17

What is the freezing point of water made by dissolving 12.81 g of magnesium chloride in 88.84 g of water? The freezing-point depression constant of water is 1.86 oC/m.

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Question 18

What is the freezing point of water made by dissolving 15.95 g of sodium chloride in 92.31 g of water? The freezing-point depression constant of water is 1.86 oC/m.

Question 19

What is the freezing point of water made by dissolving 53.38 g of sugar (C12H22O11) in 91.05 g of water? The freezing-point depression constant of water is 1.86 oC/m.

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Question 20

What is the molar mass of a substance when 9.263 g of the substance is dissolved in 129.25 g of cyclohexane and the freezing point of the solution is 5.33oC? The normal freezing point of cyclohexane is 6.6oC and the freezing-point depression constant is 20.0 oC/m.

The density of an aqueous solution of sulfuric acid is 1.69 g/mL and the concentration is 2.8 M. What is the concentration of this solution in m?

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Question 22

The density of an aqueous solution of sulfuric acid is 1.23 g/mL and the concentration is 3.27 m. What is the concentration of this solution in molarity?

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Question 23

The density of an aqueous solution of sulfuric acid is 1.21 g/mL and the concentration is 1.91 M. What is the concentration of this solution in mole fraction?

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Question 24

The density of an aqueous solution of sulfuric acid is 1.53 g/mL and the concentration is 3.06 M. What is the concentration of this solution in percent by mass?

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Question 25

For the combustion of ethanol with oxygen, suppose molecular oxygen is reacting at the rate of 1.631 M/s. At what rate (in M/s) is carbon dioxide being formed?

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Question 26

For the combustion of ethanol with oxygen, suppose molecular oxygen is reacting at the rate of 1.775 M/s. At what rate (in M/s) is ethanol reacting?

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Question 27

For the combustion of ethanol with oxygen, suppose molecular oxygen is reacting at the rate of 1.880 M/s. At what rate (in M/s) is water being formed?

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Question 28

For the reaction of nitric oxide (NO) and oxygen to form nitrogen dioxide, if molecular oxygen is reacting at the rate of 0.00076 M/s, what is the rate (in M/s) of nitric oxide reacting?

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Question 29

For the reaction of nitric oxide (NO) and oxygen to form nitrogen dioxide, if molecular oxygen is reacting at the rate of 0.00610 M/s, what is the rate (in M/s) of nitrogen dioxide being formed?

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Question 30

If the initial rate is 0.0655 M/s for a reaction with a rate law of rate = k[A], what is the value of the rate constant when the initial concentration of [A] is 0.0922 M?

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Question 31

If the initial rate is 0.0844 M/s for a reaction with a rate law of rate = k[A]0[B], what is the value of the rate constant when the initial concentration of [A] is 0.0935 M and [B] is 0.0594 M?

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Question 32

If the initial rate is 0.0965 M/s for a reaction with a rate law of rate = k[A]2, what is the value of the rate constant when the initial concentration of [A] is 0.0766 M?

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Question 33

If the initial rate is 0.0789 M/s for a reaction with a rate law of rate = k[A][B], what is the value of the rate constant when the initial concentration of [A] is 0.0546 M and [B] is 0.0868 M?

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Question 34

If the initial rate is 0.0627 M/s for a reaction with a rate law of rate = k[A][B]0, what is the value of the rate constant when the initial concentration of [A] is 0.0745 M and [B] is 0.0839 M?

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Question 35

For a first order decay of [A], if 489 mg remains of an initial sample of 1.4348 g after 369 min, what is the half life (in minutes)?

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Question 36

The decay of antimony-131 is first order with a half life is 23.03 minutes. How much of 0.8649 g sample would remain after 1.630 hours?

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Question 37

The decay of antimony-131 is first order with a half life is 23.03 minutes. How long (in minutes) would it take for a 1.4714 g sample to be reduced to 0.0477 g?

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The decay of antimony-131 is first order. What is the value of the rate constant (in 1/min) if the half life is 22.62 minutes?

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Question 39

The decay of carbon-14 is first order with a half life is 5618 years. How much of 0.8201 g sample would remain after 9212 years?

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Question 40

The decay of carbon-14 is first order. What is the value of the rate constant (in 1/year) if the half life is 5782 years?