# How many moles of propane gas (#"C"_3"H"_8#) can be burned with 1 mole of oxygen gas at STP?

##
I know that #"C"_3"H"_8+5"O"_2rarr3"CO"_2+4"H"_2"O"# and I got #0.2"mol"# , but that seems too easy for the worksheet it was on. Is the fact that it's at STP just extra info to throw me off or am I missing something?

I know that

##### 1 Answer

You are correct. 1 mole

#### Explanation:

The equation as written is 'assumed' to be at STP if written using 'Standard State' formulas published in Thermodynamics Properties Tables. Of course STP represents (in most college texts)

For 'mass' calculations, it does not matter. mass at

Your use of the equation reaction ratios in the balanced equation are spot on correct.