Chemistry, asked by Boom604, 1 year ago

20 of MgCO3 decompose to form co2 and 8 g of MgO ...calculate percentage purity of MgCO3

Answers

Answered by gudan1
5
magnesium carbonate upon heating a magnesium oxide and carbon dioxide..
magnesium carbonate weight is 84 its gives 40 gram of magnesium oxide....
where is 20 gram of magnesium carbonate gives 40 by 84 into 20 which is equal to 9.523 gram....
so the purity test is 100 by 9.5 into 8 which is equal to 84%...
84%
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