How many moles of oxygen gas (O2) will be produced when 4.8 moles of hydrogen peroxide (H2O2) decompose according to the reaction below?

Question

2 H₂O₂  → 2 H₂O + O₂

Answer 1

According to the balanced equation, every 2 moles of H₂O₂ used will produce 1 mol of O₂. Therefore if 4.8 mol of H₂O₂ are used, it'll produce half as many moles of O₂ which is 2.4 mol.