At first you need to have the whole balanced equation:
It is a neutralisation reaction and those have regular mechanism.
First we need to know how many moles of
For this we can use cross-multiplication
From the reaction we've written before we can see that 2 moles of
So we use the cross multiplication
Now that we have number of moles, we just need the molar mass (equation:
After rearranging the equation:
If anything is unclear, feel free to ask :)
First write down the reaction in full:
We won't need the equation, but it is clearer if you do so.
Notice how the moles of sulfuric acid and sodium hydroxide are in the ratio
The formula for moles is
Rearranging to solve for
Since we have
We can input our values into the rearranged equation: