HELP ME PLEASE IM LOSING MY MIND WITH THIS ?

Question

2 CO + O₂→ 2 CO₂,

how many grams of carbon dioxide is produced when 0.88 mole of carbon monoxide reacts completely with oxygen gas?

Answer 1

2 CO + O₂ → 2 CO₂

Set up dimensional analysis to convert from moles of CO to moles of CO₂ and finally to grams of CO₂.

0.88 mol CO * 2 mol CO₂ / 2 mol CO * 44.01 g CO₂ / 1 mol CO₂

Moles of CO cancels: 0.88 mol CO * 2 mol CO₂ / 2 mol CO * 44.01 g CO₂ / 1 mol CO₂

Moles of CO₂ cancels, too: 0.88 mol CO * 2 mol CO₂ / 2 mol CO * 44.01 g CO₂ / 1 mol CO₂ = 38.7288 g CO₂ = 39 g CO₂ (2 sig figs)