Here's how to calculate the grams in 0.75 moles of SO2:

1. Find the molar mass of SO2:

* Sulfur (S) has a molar mass of 32.06 g/mol

* Oxygen (O) has a molar mass of 16.00 g/mol

* SO2 has one sulfur and two oxygen atoms: 32.06 g/mol + (2 * 16.00 g/mol) = 64.06 g/mol

2. Use the molar mass to convert moles to grams:

* 0.75 moles SO2 * (64.06 g SO2 / 1 mol SO2) = 48.045 g SO2

Therefore, there are approximately 48.05 grams in 0.75 moles of SO2.