How many moles of H2So4 are in 2.50 L of 4.25 M aqueous solution?

The formula for molarity is:

M = n/V

or

M = mol/L

All you need to do is substitute the values you are given.

M = 4.25

L = 2.5

n = ?

4.25 = n/2.5

Multiply both sides by 2.5 to isolate n.

10.625 = n

There are 10.6 moles of H2So4 in the aqueous solution.