CHEM f.4_40marks

🎓 學業台小學及中學教育

2007-04-01 12:33 am

What is the mass of oxygen in 19.62g of sulphuric acid

EXPLAIN or 列出計算step

回答 (1)

2007-04-01 12:44 am

✔ 最佳答案

Molar mass of H2SO4 = 1.0 x 2 + 32.1 + 16.0 x 4
= 98.1

Mass of oxygen = 19.62 x (16.0 x 4 / 98.1)
= 12.80g

參考: My Chem Knowledge

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