Please answer Q8
8. A certain fuel X produced 75,000 kJ of heat on complete combustion of 3 kg of it. Another fuel Y produced 1,00,000 kJ of heat when 5 kg of the fuel was burnt completely.
a) Find the calorific value of X and Y.
b) Out of X and Y, which one is more efficient and by how much amount ?
Dear Student
(a)
The calorific value for a fuel =
So, for X :
The weight of X fuel = 3 Kg.
The heat produced = 72000 kJ
The calorific value of X =
So, for Y :
The weight of Y fuel = 5 Kg.
The heat produced = 100000 kJ
The calorific value of Y =
(b)
The fuel having high calorific value are considered as the good fuel.
And hence according to the data calculated for the X and Y.
The fuel X has more calorific value and X is the better fuel than Y
Regards
(a)
The calorific value for a fuel =
So, for X :
The weight of X fuel = 3 Kg.
The heat produced = 72000 kJ
The calorific value of X =
So, for Y :
The weight of Y fuel = 5 Kg.
The heat produced = 100000 kJ
The calorific value of Y =
(b)
The fuel having high calorific value are considered as the good fuel.
And hence according to the data calculated for the X and Y.
The fuel X has more calorific value and X is the better fuel than Y
Regards