Question

MM H2O2 = 34.02 g/mol MM H2O = 18.02 g/mol MM O2 = 32 g/mol

2H2O2 —> 2H2O + O2

If 14.3 moles of H2O2 is decomposed, how many grams of oxygen has are produced? Show ALL your work to get full credit.

(PLEASE HELP QUICKLY!!!)

Answer 1

The grams of oxygen that are produced is 228.8 grams

calculation

2H₂O₂ → 2H₂O +O₂

Step 1: use the mole ratio to determine the moles of O₂

from equation above H₂O₂:O₂ is 2:1

therefore the moles of O₂ = 14.3 moles ×1/2 = 7.15 moles

Step 2: find mass of O₂

mass = moles × molar mass

= 7.15 moles × 32 g/mol =228.8 g