Question
Question: 1 g of hydrogen is converted into 0.993 g of helium in a thermonuclear reaction. The energy released...
1 g of hydrogen is converted into 0.993 g of helium in a thermonuclear reaction. The energy released is
A
63 × 107J
B
63 × 1010J
C
63 × 1014J
D
63 × 1020J
Answer
63 × 1010J
Explanation
Solution
∆m = 1 – 0.993 = 0.007 gm
∴ E = ∆mc2 = 0.007 × 10–3 × (3 × 108)2 = 63 × 1010 J