The number of vacancies in some hypothetical metal increases by a factor of 3 when the temperature is increased from 978 C to 1240 C. Calculate the energy for vacancy formation (in J/mol) assuming that the density of the metal remains the same over this temperature range.

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The number of vacancies in some hypothetical metal increases by a factor of 3 when the temperature is increased from 978 C to 1240 C. Calculate the energy for vacancy formation (in J/mol) assuming that the density of the metal remains the same over this temperature range. O 76632.94 O 92654.32 O 55934.72 65953.89