What is the minimum amount of a 6.0 M solution of sulfuric acid necessary to produce 25 grams of hydrogen gas if the molar ratio in the chemical reaction is a 1:1

25 g H2 gas is 25/2.016 = 12.4 moles hydrogen.

1:1 ratio says we need 12.4 moles H2SO4.
M = moles/L. You know moles and M, solve for L. But I doubt the ratio is 1:1