How many moles of CO2 would be made if you have 8 moles of C3H8?
C3H8 + 5O2 → 3CO2 +4 H2O
You need to learn to do these yourself. You've posted several of the same kind of problem over the last few days and I've given you the step by step procedure here.
http://www.jiskha.com/science/chemistry/stoichiometry.html
I can help if you tell me exactly what you don't understand. You already have moles. All you need to do is to convert for one substance to another and the way you do that is to use the coefficients in the balanced equation.
is the answer 24?
To determine the number of moles of CO2 produced, we can use the balanced chemical equation you provided.
According to the equation:
1 mole of C3H8 produces 3 moles of CO2
So, if you have 8 moles of C3H8, you can calculate the number of moles of CO2 as follows:
Number of moles of CO2 = (number of moles of C3H8) x (moles of CO2 per mole of C3H8)
Number of moles of CO2 = 8 moles x 3 moles/1 mole
Number of moles of CO2 = 24 moles
Therefore, if you have 8 moles of C3H8, you would produce 24 moles of CO2.