How many grams of H2O are present in 0.2 mole of it?
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How many grams of Al are present in 0.2 mole of it?
How many grams of HCl are present in 0.1 mole of it?
How many grams of CO2 is present in 0.1 mole of it?
The mass of 5.6 litres of a certain gas at S.T.P. is 12 g. What is the relative molecular mass or molar mass of the gas?