[chrozer]

In going from conditions of STP to the conditions of 0 F and 760 Pascals, the density of argon will

a) increase less than 10%
b) not change
c) decrease more than 10%
d) decrease less than 10%
e) increase more than 10%

When .72 g of a liquid is vaporize at 110 C and .967 atm, the gas occupies a volume of .559 L. The empirical formula of the gas is CH₂. What is the molecular formula of the gas?

a) CH₂
b) C₂H₄
c) C₃H₆
d) C₄H₈
e) none of these

[Arkcon]

Well, they're multiple guess, but you'll learn the most and be better off for the exam by finding the complete answer.  Can you tell us what formula for gases you need to use to solve these.

[chrozer]

I know that U need to use the Ideal Gas Law but I have no idea how to use it to find my answer.

[Arkcon]

Well, lets start by copying down the ideal gas law formula and plugging in some numbers.

[chrozer]

NVM. I figured it out.

[Arkcon]

Groovy.