How many grams of CO2 would be formed from 30 grams of C7H8 in the following (UNBALANCED) reaction? ?

Question

How many grams of CO2 would be formed from 30 grams of C7H8 in the following (UNBALANCED) reaction? C7H8 + O2 → CO2 + H2O

How many moles of H2 would be formed from 50 grams of Fe in the following (UNBALANCED) equation?

Fe + H2SO4 → Fe2(SO4)3 + H2

Answer 1

C7H8 + 9O2 → 7CO2 + 4H2O

(7(12.011) + 8(1.0079)) g  C7H8 → 7(12.011+2(15.999)) g CO2

92.1402 g  C7H8 → 308.063 g CO2

30 g  C7H8 → 100.30 g CO2 ≈ 100 g CO2

2Fe + 3H2SO4 → Fe2(SO4)3 + 3H2

2 mol Fe → 3 mol H2

1 mol Fe → 1.5 mol H2

55.847 g Fe → 1.5 mol H2

50 g Fe → 1.3430 mol H2 ≈ 1.3 mol H2