Question

If there is a loss of 4.36 × 10-5 g of mass in a nuclear reaction, how many kJ of energy would be released? Recall that c = 3 × 108 m/s.

Answer 1

The answer is 3.92 x 10^6

Answer 2

Answer : The amount of energy released would be,
`39.24* 10^8J`

Solution : Given,

Mass =
`4.36* 10^(-5)g=4.36* 10^(-8)Kg`

conversion : (1 Kg = 1000 g)

Speed of light =
`3* 10^8m/s`

Formula used :

`E=m* c^2`

where,

E = energy released

m = mass

c = speed of light

Now put all the given values in this formula, we get

`E=(4.36* 10^(-8)Kg)* (3* 10^8m/s)^2=39.24* 10^8J`

Therefore, the amount of energy released would be,
`39.24* 10^8J`