How many grams of CO2 are produced when 11.47 moles hexane combust?

Question

Show work please

Answer 1

2C6H14 + 19O2 ==> 12CO2 + 14H2O

Use the coefficients in the balanced equation to convert mols C6H14 to mols CO2
Then convert mols CO2 to grams. g = mols x molar mass.

Answer 2

I balanced the equation like so C6H14 + 19/2 O2 ==> 6CO2 + 7H2O

My teacher taught us the 19/2 was valid

My work:

11.47 mol C6H14 * 6 CO2/1 mol C6H14 * 44g/mol/1 mol CO2 = 3, 028 g of CO2