1.

5 moles of CO_(2) and 5 moles of H_(2)O do not have the same mass. Justify.

Answer»

Solution :Molar mass of `CO_(2) = 12 + (2 xx 16)`
= 12 + 32 = 44 g
Molar mass of 5 moles of `CO_(2) = 5 xx 44` = 220g ...... (1)
Molar mass of `H_(2)O = (2 xx 1) + 16`
= 2 + 16 =18 g
Molar mass of 5 moles of `H_(2)O = 5 xx 18`
= 90 g .... (2)
From (1) and (2), 5 moles of `CO_(2)` and 5 moles of `H_(2)O` do not have the same mass.


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