Question

A gas sample contains 16.0 g of CH4, 16.0 g of O2, 16.0 g of SO2, and 33.0 g of CO2. What is the total number of moles of gas in the sample? :
A) 2.50 moles
B) 3.00 moles
C) 2.75 moles
D) 2.25 moles
E) 4.00 moles

Answer 1

First find all the moles of each substance.

Answer 2

Then you add the moles together, You got 4 of them, I'll show you one of them
\[16g \times \frac{1molCH_4}{16gCH_4}=1molCH_4\]