An oxide of M (MO) reacts completely with carbon to give 12.4g of metal M and 4.29g of carbon dioxide .what is the relative atomic mass of M?
回答 (1)
2016-01-28 8:24 am
Let y be the relative atomic mass of M.
2MO + C → 2M + CO₂
Mole ratio M : CO2 = (12.4/y) : [4.29/(12 + 16×2)] = 2 : 1
12.4/y = (4.29/44) × 2
y/12.4 = 22/4.29
y = 63.6
Relative atomic mass of M = 63.6
2MO + C → 2M + CO₂
Mole ratio M : CO2 = (12.4/y) : [4.29/(12 + 16×2)] = 2 : 1
12.4/y = (4.29/44) × 2
y/12.4 = 22/4.29
y = 63.6
Relative atomic mass of M = 63.6
收錄日期: 2021-04-18 14:23:16
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20160126023402AAQjjrG