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How to calculate density with mL?

Calculate the molarity of concentrated nitric acid if it is 70% HNO3 by weight and has a density of 1.42 g/mL?

  • Answer:

    pick a basis of 100 g. that means there are 70 grams of nitric acid. find out how many moles by dividing it by its molar mass. which is apprx 1.1 moles. then use the formula d=m/v to find out the volume of 100 g of solutions. that should be around 70ml or 0.070 L. then use the formula for molarity to find the M.

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pick a basis of 100 g. that means there are 70 grams of nitric acid. find out how many moles by dividing it by its molar mass. which is apprx 1.1 moles. then use the formula d=m/v to find out the volume of 100 g of solutions. that should be around 70ml or 0.070 L. then use the formula for molarity to find the M.

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