The gas stream from a sulfur burner consists of 15 mol-% SO2, 20 mol-% O2, and 65

Question:

The gas stream from a sulfur burner consists of 15 mol-% SO2, 20 mol-% O2, and 65 mol-% N2. The gas stream at atmospheric pressure and 400(C enters a catalytic converter A here 86% of the SO2 is further oxidized to SO2. On the basis of 1 mol of gas entering, how much heat must he removed from the converter so that the product gases leave at 500(C?