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In the reaction above (10g H₂ and 64g O₂), the mass of the excess reactant (H₂) left over is:
2 g
4 g
6 g
8 g
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10g of H₂ (5 moles) reacts with 64g of O₂ (2 moles) in 2H₂ + O₂ → 2H₂O. The mass of H₂O formed is:
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For C + O₂ → CO₂, if 6 g of C (0.5 mol) is burned in 16 g of O₂ (0.5 mol), the volume of CO₂ produced at STP is:
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