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chemistry empirical formula
發問:
唔識做以下題目，希望可以得到解答，（有解釋就最好) 感謝萬分: )in an experiment,two heated oxides X and Y of the same metal M were completely reduced by hydrogen. The result were recorded as follows:1) mass of oxide X=42.9g , mass of metal M left = 38.1 g2) mass of oxide Y= 15.9 g ,mass of metal M left =12.7gif the formula... 顯示更多 唔識做以下題目，希望可以得到解答，（有解釋就最好) 感謝萬分: ) in an experiment,two heated oxides X and Y of the same metal M were completely reduced by hydrogen. The result were recorded as follows: 1) mass of oxide X=42.9g , mass of metal M left = 38.1 g 2) mass of oxide Y= 15.9 g ,mass of metal M left =12.7g if the formula of oxide X is M2O, what is the formula of oxide Y? (relative atomic mass : O=16.0) THX !
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其他解答:
chemistry empirical formula
發問:
唔識做以下題目，希望可以得到解答，（有解釋就最好) 感謝萬分: )in an experiment,two heated oxides X and Y of the same metal M were completely reduced by hydrogen. The result were recorded as follows:1) mass of oxide X=42.9g , mass of metal M left = 38.1 g2) mass of oxide Y= 15.9 g ,mass of metal M left =12.7gif the formula... 顯示更多 唔識做以下題目，希望可以得到解答，（有解釋就最好) 感謝萬分: ) in an experiment,two heated oxides X and Y of the same metal M were completely reduced by hydrogen. The result were recorded as follows: 1) mass of oxide X=42.9g , mass of metal M left = 38.1 g 2) mass of oxide Y= 15.9 g ,mass of metal M left =12.7g if the formula of oxide X is M2O, what is the formula of oxide Y? (relative atomic mass : O=16.0) THX !
最佳解答:
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Let m g/mol be the molar mass of M. In X, molar ratio M : O = 2 : 1 38.1/m : (42.9 - 32.1)/16 = 2 : 1 38.1/m : 0.3 = 2 : 1 38.1/m = 0.6 m = 63.5 In Y, mole ratio M : O = 12.7/63.5 : (15.9 - 12.7)/16 = 0.2 : 0.2 = 1 : 1 Empirical formula of Y = MO其他解答:
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