Answered

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a sample of concentrated nitric acid has a density of 1.41g/ml and contains 70.0% HNO3 by mass. what mass of HNO3 is present per liter of solution.

Sagot :

If you assume you have just 1 liter of sample, you can calculate the mass.
1000mL x 1.4g/mL = 1410g
and 70% of that would be the nitric acid.
Multiplying 1410 by 0.7 would give you 987g, and converting that to moles would give you 15.67M.
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