Thermal decomposition of 5.0 metric tons of limestone to lime and carbon dioxide requires 9.0 x 106 kJ of heat. Convert this energy to joules A. 9.0 x 108 J B. 9.0 x 104 J C. 9.0 x 103 J D. 9.0 x 109 J E. None of these is within 5% of the correct answer

Answer : The correct option is, (D)

Explanation :

As we are given that the energy require for decomposition is, .

Now we have to calculate the energy in joules.

Conversion used :

1 kJ = 1000 J

As, 1 kJ of energy = 1000 J

So, of energy =

                                          =

Therefore, the energy in joules is,