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A solution of HNO3 in water has a specific gravity of 1.10 at 25℃. the concentration...

A solution of HNO3 in water has a specific gravity of 1.10 at 25℃. the concentration of the HNO3 is 15g/L of solution. What is the
a) Mole fraction of HNO3 in the 100g solution?
b) ppm of HNO3 in the solution?

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