0.125 of impure magnesium is heated in the air until there is no weight change. 0.2g of mgO is obtained. Calculate percentage yield?
回答 (1)
2016-04-10 4:19 am
No, not enough information is given to calculation percent yield. What can be calculated is the percent of Mg in the original sample, like this:
Supposing the missing units on "0.125" to be "grams":
(0.2 g MgO) / (40.30440 MgO/mol) x (1 mol Mg / 1 mol MgO) x (24.30506 g Mg/mol) / (0.125 g) = 0.96 =
96% Mg
Supposing the missing units on "0.125" to be "grams":
(0.2 g MgO) / (40.30440 MgO/mol) x (1 mol Mg / 1 mol MgO) x (24.30506 g Mg/mol) / (0.125 g) = 0.96 =
96% Mg
收錄日期: 2021-05-01 20:43:47
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