Calculate mass of 3g molecules of HNO_3.

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Solution

gram molecule is same as mole

so you need to find out the mass of 3 moles of HNO3

molar mass of HNO3 = 1 + 14 + 48 = 63 g or more precisely it is 63.0128 grams

3 moles = 3 x 63 g = 189 grams. That would be the mass.

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(C_{2} H_{2})

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(Molecular Mass of HNO₃=63).

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