chemistry
posted by lila .
which of the following gasses will have the largest volume ( all volumes are measured at the same temperature and pressure)
A) 16g of CH4
B) 34g of NH3
C) 44g of co2
D) 64g of SO2
i think the answer is C am i right

You may or may not be right. How did you get your answer? That is the important part.

i found the gram formula mass for each gas and took it away from the gram given in the example

Close but no cigar.
You find the gram formula mass, which is
16 for CH4
17 for NH3
44 for CO2
64 for SO2.
So you have 1 mole CH4
2 moles NH3
1 mole CO2
1 mole for SO2.
Now which will occupy the most volume at the same P and T.
You may want to use
PV = nRT
You know P is the same, R is the same, T is the same. So the highest V is for the xxxxx n.