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5 g of a sample of magnesium carbonate o...

5 g of a sample of magnesium carbonate on treatment with excess of dilute hydrochloric acid gave 1.12 L of `CO_(2)` at STP . The percentage of magnesium carbonate in the mixture is

A

42

B

40

C

84

D

80

Text Solution

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The correct Answer is:
C
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