8.3. For the following conditions, calculate (a) the wt\% hydrogen in coke, (b) the coke yield, and (c) the catalyst-to-oil ratio. Carbon on spent catalyst: 1.50wt% Fuidised Catalytic Cracking 233 Carbon on regenerated catalyst: 0.80wt% Air from blower: 155,000lb/h Hydrocarbon feed to reactor: 295,000lb/h Flue gas analysis (Orsat) vol\%: CO=12.0,CO2=6.0,O2=0.7. N2=81.3