So, we're given the following equation:
We're asked to find how many moles of H2O can we produce from 2 moles of H2SO4. For this, we need to look at the coefficients of each compound in the reaction.
As you can see, we have 1 mol of H2SO4 and 2 moles of water according to the reaction. This tells us that for each 1 mol of H2SO4, we can produce 2 moles of water, so there's a 1:2 ratio.
So, if we have 2 moles of H2SO4:
Therefore, the answer is 4 moles of H2O.