To get 5.6 lit of CO(2) at STP weight of...

To get 5.6 lit of `CO_(2)` at STP weight of `CaCO_(3)` to be decomposed is

100g

50g

25g

75g

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It is customary to indicate the strength of a sample of H_2O_2 under specification of volume. The strength of H_2O_2 solution can also be in %(w/v) or molarity or normality. 10 vol H_2O_2 solution means Iml of H_2O_2 solution decomposes to give 10ml of O_2 gas at STP. 1 lit of H_2O_2 solution decomposes to give 10 lit of O_2 gas at STP. The volume strength of 15%(w/v) solution of hydrogen peroxide is

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