The diffusivity of silver (Ag) atoms in solid silver is l·0x10⁻¹⁷ m²/s at 500°C and 7.0x10⁻¹³ m²/s at 1000°C. Calculate the activation energy (joules per mole) for the diffusion of Ag in Ag in the temperature range of 500 to 1000°C. (0-183 kJ/mol)