Hi Dr. Uma,
I was wondering on how I should solve this problem? Screenshot 2025-01-20 at 4.09.57 PM.png
In this question we need to work out the energy of fuel for 153 g from the information of 100% C mass and 100% H mass.
Charcoal – 100% carbon so 34kJ/g*153g
Hydrogen – 100% H so 142kJ/g * 153g
Wood pine – 50% C and 6% H = ( (50*153)/100*34kJ/g + (6*153 )/100*142) kJ
Bituminous coal – 7% C and5% H = ( (7*153)/100*34kJ/g + (5*153 )/100*142) kJ
Crude oil – 85% C and 12 % H = ( (85*153)/100*34kJ/g + (12*153 )/100*142) kJ
Natural gas –70% C and 23 % H = ( (70*153)/100*34kJ/g + (23*153 )/100*142) kJ
Now Check which one is giving maximum energy