Question

Determine the mass of co2 produced by burning enough carbon (in the form of charcoal) to produce 450 kj of heat. c(s)+o2(g)?co2(g)?h?rxn=?393.5kj

Answer 1

C + O₂ = CO₂ + 393.5 kJ

1 mol CO₂ - 393.5 kJ
n mol CO₂ - 450 kJ

n(CO₂)=450*1/393.5=1.1436 mol
M(CO₂)=44.01 g/mol

m(CO₂)=n(CO₂)M(CO₂)

m(CO₂)=1.1436*44.01=50.33 g