What is the energy equivalent of an object with a mass of 23 g

0.207x10^16 Joules!

Explanation:

Using Einstein's law of mass energy, we know that the energy of a matter is:

E = mc^2

where, m [kg] = mass

c [m/s] = speed of light

In this case:

m=23g = 0.023kg.

c = 3×10^8m/s (This is an aproximation)

Then:

E = mc^2 = (0.023kg)(3×10^8m/s)^2 = 0.207x10^16 Joules!

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