According to Einstein’s equation, what mass is equivalent to an energy of

6.7 × 10–14 J? You should use a value for c of 3.0 × 108 m s–1 and give your answer in kilograms, in scientific notation and to two significant figures. thankyou.

The formula is M = E/c^2

You should do the calculation yourself. Your E and c are already in SI units, so the answer will be in kg.