Multiple
Choice
Identify the letter of the choice that best completes the statement or answers the
question.
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1.
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Which gas effuses
faster, H2O or CO2? a. | H2O | c. | not enough information to determine | b. | CO2 | d. | what is effusion? | | | | |
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2.
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At STP, 44.8
liters of CO2 contain the same number of molecules as a. | 1.00 mole of He | c. | 2.00 moles of Ne | b. | 0.500 moles of H2 | d. | 4.00 moles of N2 | | | | |
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3.
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A mixture of four
gases exerts a total pressure of 860 mm Hg. Gases A and B each exert 220 mm Hg. Gas C
exerts 110 mm Hg. What pressure is exerted by gas D? a. | 530 mm Hg | b. | 165 mm
Hg | c. | 310 mm Hg | d. | 860 mm
Hg | | | | | | | | |
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4.
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As the pressure of
a given sample of a gas increases at constant temperature, the mass of the sample a. | decreases | b. | increases | c. | remains the same | | | | | | |
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