ok this is on a worksheet so there isn\'t a textbook for thisone. Concentrated n

Question

ok this is on a worksheet so there isn't a textbook for thisone. Concentrated nitric acid is a solution that is 70%HNO3 by mass. Thedensity of this acid is 1.42 g/mL. What is the Molarity ofthis acid? i'd really appreciate some help on this one! it's got meslightly confused. ok this is on a worksheet so there isn't a textbook for thisone. Concentrated nitric acid is a solution that is 70%HNO3 by mass. Thedensity of this acid is 1.42 g/mL. What is the Molarity ofthis acid? i'd really appreciate some help on this one! it's got meslightly confused. i'd really appreciate some help on this one! it's got meslightly confused.

Explanation / Answer

In every 1 mL, there is 1.42 x 0.7 = 0.994g of HNO3 n = m / M = 0.994 / (1 + 14 + 16 x 3) = 0.01578mol Molarity = number of moles / Volume = 0.01578 / 0.001 = 15.78M Hope this helps!

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