Chemistry class work

Question

How many grams of COz will be produced when 6.25 mol of ZnO reacts according to the following equation? Your work must show a balanced equation and the work for calculating the correct answer.

C + ZnO → Zn + CO2

Answer 1

C + 2 ZnO ==> 2 Zn + CO₂ ... balanced equation

molar mass ZnO = 81.38 g / mol

molar mass CO2 = 44.0 g / mol

6.25 mol ZnO x 1 mol CO₂ / 2 mol ZnO x 44.0 g CO₂ / mol CO2 = 138 g CO₂ (3 sig.figs.)