Metal X forms an oxide. 27.53g of this oxide contains 24.96g of X. What is the mole ratio of X to oxgen in the oxide?
(relative atomic masses : O=16.0, X=207.0)
reacting mass 高手快來
2006-12-18 2:44 am
回答 (1)
2006-12-18 2:56 am
✔ 最佳答案
No. of moles = mass / (molar mass)In 27.53 g of the oxide, mass of O = 27.53 - 24.96 = 2.57 g
Mole ratio X : O
= (24.96/207) : (2:57/16)
= 0.1206 : 0.1606
= 1 : 1.332
= 3 : 4
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