Chemistry

How many moles of H2SO4 are needed to prepare 5.0 liters of 2.0M solution of H2SO4?
a. 5.0
b. 10
c. 2.5
d. 20

Go back to the definition of molarity.
M = #mols/L

is the answer d

If M = # mols/L, then
L x M = #mols.
5.0L x 2.0M = 10 mols.

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