2H₂ + O₂ → 2H₂O. How many grams of water form from 10 g of hydrogen? (H = 1, O = 16)
Answer and explanation
Correct answer: C. 90 g
- Step 1: 10 g of H₂ is 5 mol.
- Step 2: The same moles of water form: 5 x 18 = 90 g.
Answer
90 g.
Why not the others: 180 g, 20 g and 160 g do not fit.
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