What mass of carbon dioxide is formed by the complete combustion of 760 g of ethanol?
1. Write the balanced equation.
C2H5OH + 3O2 ==> 2CO2 + 3H2O
2. Convert 760 g ethanol to mols.
mols = grams/molar mass = ?
3. Using the coefficients in the balanced equation, convert mols ethanol to mols CO2. That's
?mols ethanol x (2 mols CO2/1 mol ethanol) = ?
4. Convert mols CO2 to grams.
grams CO2 = mols CO2 x molar mass CO2 = ?