The burner gas from a sulfur burner analyzes 9.2% SO2, 7.13% O2 and 83.67% N2. The raw sulfur charged contains 82% pure sulfur and analysis of the cinder shows 20% unburned sulfur. Calculate using a basis of 100 kg raw sulfur: a. % excess air (S SO2); b. % excess air (S SO3); c. m3 of saturated air (28C, 750 mmHg)/kg raw S; d. m3 of burner gas (300C, 730 mmHg)/ kg raw S.