using the balanced reaction equation for the combustion of propane, determine the number ofmoles of oxygen that would react with.50 mol propane and the number of moles of carbon dioxide that would be produced?

Answer 1

C3H8 + 5O2 ==> 3CO2 +4H2O

The coefficients tell you.
1 mole C3H8 requires 5 moles O2 and produces 3 moles CO2 and 4 moles H2O for complete combustion. Just scale everything up from 1 mole C3H8 to 50 moles C3H8.