Asked by Stephanie

How many grams of a stock solution that is 87.0 percent H2SO4 by mass would be needed to make 200 grams of a 35.5 percent by mass solution? Show all of the work needed to solve this problem.
Answered by Graham
Initial mass of H2SO4 = final mass of H2SO4 in solution

Initial mass is (87.0%) of target solution (X).
Final mass is (35.5%) of the initial solution (200g).

X = 200g * 35.5/87.0
Answered by Anonymous
chemistry is the most boring subject in the universe. :(
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