How much mass must be converted to energy to release one million kilowatt-hours?
A) $4.0 \mathrm{~g}$
B) $3.6 \times 10^{-12} \mathrm{~g}$
C) $3.6 \times 10^{-6} \mathrm{~g}$
D) $40 \mu \mathrm{g}$
E) $40 \mathrm{pg}$

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The Answer of  How much mass must be converted to energy to release one million kilowatt-hours?
A) $4.0 \mathrm{~g}$
B) $3.6 \times 10^{-12} \mathrm{~g}$
C) $3.6 \times 10^{-6} \mathrm{~g}$
D) $40 \mu \mathrm{g}$
E) $40 \mathrm{pg}$

How Much Mass Must Be Converted to Energy to Release 4.0 g4.0 \mathrm{~g}4.0 g

How Much Mass Must Be Converted to Energy to Release $4.0 \mathrm{~g}$