AnswersChemistryStoichiometry and the Gas Laws

Stoichiometry and the Gas Laws — Test Answers

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Consider the balanced equation. 2 cap h sub 2 cap s plus 3 cap o sub 2 rightarrow 2 SO sub 2 plus 2 cap h sub 2 cap o Which option gives the correct mole ratios?

A
cap h sub 2 ratio of cap s to SO sub 2 is equal to ratio of 2 to 2 and ratio of cap o sub 2 to cap h sub 2 cap o is equal to ratio of 3 to 2
B
cap h sub 2 ratio of cap s to SO sub 2 is equal to ratio of 2 to 3 and ratio of cap o sub 2 to cap h sub 2 cap o is equal to ratio of 3 to 2
C
cap h sub 2 ratio of cap s to SO sub 2 is equal to ratio of 4 to 4 and ratio of cap o sub 2 to cap h sub 2 cap o is equal to ratio of 5 to 4
D
cap h sub 2 ratio of cap s to SO sub 2 is equal to ratio of 4 to 6 and ratio of cap o sub 2 to cap h sub 2 cap o is equal to ratio of 4 to 4
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Which statement best describes a mole?

A
It is used for chemical equations that have reversible reactions.
B
It is used mainly for writing chemical formulas.
C
It is used mainly for dealing with fluid substances.
D
It is used for directly comparing the amounts of substances.
25

Which statement can best be concluded from the ideal gas law?

A
All collisions between atoms or molecules are perfectly elastic and are not the result of any attractive forces.
B
The product of pressure and volume of an ideal gas is proportional to the absolute temperature.
C
The behavior of a gas under real conditions does not obey the ideal gas law.
D
The temperature, pressure, and volume of a gas are all related.

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