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I need to calculate what volume of oxygen would be required to burn 100 g of propane.
I've got that it is 363,64 g of O2 for 100g of C3H8
then I use Ideal gas law to find the volume V= nRT/P
n= 363,64 g /32 g/mol
here is a question. We need 5 moles of oxygen for 1 mole of propane. Should I calculate n with 32 g/mol of O2 or I need 5O2=160 g/mol