Chemical Kinetics and Nuclear ChemistryHard

Question

The energy equivalent of 2.0 mg mass defect is

Options

A.1.8 × 104 erg
B.9 × 10-19 erg
C.1.5 × 1020 erg
D.1.8 × 1018 erg

Solution

Using the repletion, ᐃE = ᐃm × C3
            (ᐃm in kg, ᐃE in J)
2mg = 2 × 10-6 kg
∴ ᐃE = 2 × 10-6 × (3 × 108)2J
= 2 × 10-6 × 9 × 1016J = 18 × 1010J
= 18 × 1010 × 107 erg

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