Chemistry
posted by K .
Concentrated sulfuric acid is 18.4 molar and has a density of 1.84 grams per milliliter. After dilution with water to 5.20 molar the solution has a density of 1.38 grams per milliliter. This concentration of H2SO4 is often used in lead storage batteries(like a car battery).
1.Calculate the volume of concentrated H2SO4 needed to make 1.00L of 5.20 molar solution.
2.Calculate the % concentration H2SO4 in the concentrated solution.

Chemistry 
DrBob222
1. mL x M = mL x M
2. 18.4 M = 18.4 moles/L soln
18.4 moles = 18.4*98 g/mol = 1803 grams H2SO4 in 1 L solution. The mass of 1 L solution is 1.84 g/mL x 1000 mL = 1840 grams.
%H2SO4 = (mass H2SO4/total mass soln)*100 = ??
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