
The mass of water (Hâ‚‚O) needed to meet the oxygen demand is 191587.5 g
2H₂ + O₂ —> 2H₂O
Molar mass of O₂ = 16 × 2 = 32 g/mol
Mass of  O₂ from the balanced equation = 1 × 32 = 32 g
Molar mass of H₂O = (2×1) + 16 = 18 g/mol
Mass of H₂O from the balanced equation = 2 × 18 = 36 g
SUMMARY
From the balanced equation above,
32 g of Oâ‚‚ reacted to produce 36 g of Hâ‚‚O
From the balanced equation above,
32 g of Oâ‚‚ reacted to produce 36 g of Hâ‚‚O
170300 g of O₂ will react to produce = (170300 × 36) / 32 = 191587.5 g of H₂O
Thus, 191587.5 g of Hâ‚‚O is needed to meet the oxygen demand
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