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snowraven
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A solution of Nitric Acid that is 72.0 % HNO3 by mass with a density of 1.55 grams per mL. How many moles of HNO3 in 100 mL of the solution?
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meepmeep
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Find what mass per mL you have of HNO3 by using the percentage. Then convert it to give you the total mass, which you compare with the Mr of HNO3 to find the number of moles.
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