Multiple Choice
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A balloon is filled with helium gas. For the next two question(s),
select the letter of the balloon diagram that corresponds to the given change in conditions.
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1.
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The temperature is changed from
50 °C to –150 °C at constant
pressure.
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2.
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The balloon is put into a
chamber with lower pressure at the same temperature.
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3.
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Which of the following is NOT
part of the kinetic theory of gases?
A) | Gas particles do not attract or repel one another. | B) | There is very little
empty space in a gas. | C) | Gas particles move rapidly. | D) | A gas is composed of
very small particles. |
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4.
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Which of the following salts is insoluble in water?
A) | CaCl2 | B) | NH4NO3 | C) | NaOH | D) | CuS |
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5.
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An autoclave is used to sterilize surgical equipment because
A) | it allows water to boil at temperatures less than 100 °C. | B) | it allows water to
boil at temperatures above 100 °C due to its high pressure. | C) | it allows water to
boil at 100 °C at pressures less than 1 atm. | D) | it provides very high temperatures and very low
pressures. |
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6.
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The volume of a sample of gas, initially at 25 °C, increases from 158 mL to
450. mL. What is the final temperature of the sample of gas, if the pressure in the container is kept
constant?
A) | –168 °C | B) | 105 °C | C) | 71
°C | D) | 576 °C |
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7.
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How many grams of K2SO4 are needed to prepare 4.00 L of
0.0510 M solution?
A) | 35.5 g | B) | 17.8 g | C) | 71.0
g | D) | 63.8 g |
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8.
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A nitric acid solution that is 70.0% (m/m) contains
A) | 70.0 mol HNO3 | B) | 70.0 g HNO3 and 70.0 g of
water | C) | 70.0 g HNO3 and 100.0 g of water | D) | 70.0 g
HNO3 and 30.0 g of water |
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9.
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A gas occupies 15.0 L at STP. What volume will it occupy at 735 torr and
57 °C?
A) | 19 L | B) | 4.6 L | C) | 9.7
L | D) | 6.7 L |
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Short Answer
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10.
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How many liters of HCl can be produced at STP from reaction of 4.00 g
Cl 2 as shown below: H2 (g) +
Cl2 (g) ® 2 HCl (g)
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