Chem help: STP?

I have exams soon and got given an old paper and don't know how to do this question. A portable gas heater runs from butane gas cylanders, that each contain 500g of butane gas. 2C4h10 + 13O2 => 8co2 + 10h2O a) calculate the volume of carbon dioxide gas produced when one complete cylander is used at 1)... show more I have exams soon and got given an old paper and don't know how to do this question.

A portable gas heater runs from butane gas cylanders, that each contain 500g of butane gas.
2C4h10 + 13O2 => 8co2 + 10h2O
a) calculate the volume of carbon dioxide gas produced when one complete cylander is used at 1) STP, 2) 20 degrees celcius and 1 atm pressure
b) Calculate the mass of oxygen gas required to allow for the complete combustion of this cylander of butane.
c) Suggest what might happen if this amount of oxygen was not available.

Pleas help I dont want to fail my exam because I dont get how to do this
2 answers 2