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The energy equivalent to a substance of ...

The energy equivalent to a substance of mass 1 g is

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Energy `E = 10^(-3) xx (3 xx 10^(8))^(2) J`
`E = 10^(-3) xx 9 xx 10^(16) = 9 xx 10^(13) J`
Thus, if one gram of matter is converted to energy, there is a release of enormous amount of energy.
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