## To solve this problem, you need to use the balanced equation and the stoichiometry of the reaction. The balanced equation tells us that 2 moles of SO2 react with 1 mole of O2 to form 2 moles of H2SO4.

Given:

- 5 moles of SO2

- 2 moles of O2

First, we'll determine how much H2SO4 can be formed from the given moles of SO2 and O2.

Step 1: Convert moles of SO2 to moles of H2SO4

Since the ratio of SO2 to H2SO4 is 2:2, the moles of H2SO4 will be the same as the moles of SO2.

Therefore, 5 moles of SO2 will form 5 moles of H2SO4.

Step 2: Convert moles of O2 to moles of H2SO4

Using the ratio of 1 mole of O2 to 2 moles of H2SO4 from the balanced equation, we can calculate the moles of H2SO4.

2 moles of O2 will form (2/1) * 2 = 4 moles of H2SO4.

Step 3: Calculate total moles of H2SO4

To find the total moles of H2SO4, we need to add the moles calculated in step 1 and step 2.

Total moles of H2SO4 = 5 moles + 4 moles = 9 moles

Therefore, from the given amounts of 5 moles of SO2 and 2 moles of O2, you can form 9 moles of H2SO4.