How many moles of molecules are there in 250 grams of hydrogen nitrate?

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  1. hydrogen nitrate is nitric acid, HNO3. The molecular weight (also called the molar mass) is 1 + 14 + (3x16) = 63 g per mole. (63.016 if you want to be more exact.) You have to look up the atomic weights of the atoms to get the "exact" value. H, N and O all have close to integer values for atomic weight.

    250 g is 250/63 = ___ moles

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  2. 5455

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