Coal from Kentucky has the following analysis on a dry basis, percent by mass. S: 0.8%; H2:

Question:

Coal from Kentucky has the following analysis on a dry basis, percent by mass. S: 0.8%; H2: 5.4%; C: 80.1%; O2: 9.5%; N2: 1.2%; Ash: 3%. This coal is burned with 40% excess air. Determine the.
(a) Air-fuel ratio on a mass basis.
(b) What-if Scenario: What would the air to fuel ratio be if the coal were burned with theoretical amount of air?