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Calculate the weight of 0.2 mole of sodi...

Calculate the weight of 0.2 mole of sodium carbonate.

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No. of moles of `Na_(2)CO_(3)=0.2` mole
Molar mass of `Na_(2)CO_(3)=106 g //"mol"`
Mass = No of moles `xx` Molar mass of `Na_(2) CO_(3)=0.2xx106=21.2g`.
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