Q. 20.0 g of magnesium carbonate sample decomposes on heating to give carbon dioxide and 8.0 g magnesium oxide. What will be the percentage purity of magnesium carbonate in the sample? (At. wt. :Mg =24) (1) 60 (2) 84 (3) 75 (4) 96

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$20.0 g$ of a magnesium carbonate sample decomposes on heating to give carbon dioxide and $8.0 g$ of magnesium oxide. What will be the percentage purity of magnesium carbonate in the sample? (At. Wt. $M g = 24$ )

20.0

mg of a magnesium carbonate sample decomposes on heating to give carbon dioxide and

8.0

mg magnesium oxide. What will be the percentage purity of magnesium carbonate in the sample?

[Atomic weight of

M g = 24

]

Q. 40 gm of a magnesium carbonate sample decomposes on heating to give carbon dioxide and 16 gm magnesium oxide. What will be the percentage purity of magnesium carbonate in the sample.

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