The enthalpy of vaporization for water is 40.67 kJ/mol and the enthalpy of fusion for water is 6.01 kJ/mol. What is the enthalpy of deposition?

Explanation:

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In this case, since vaporization is the processes by which a liquid goes to the gas phase, fusion by which a solid goes to liquid and deposition by which a gas goes to solid; we infer that the following set up relates the enthalpies associated to each process:

Because deposition goes from a state with more energy to a state with less energy, therefore it is negative; in such a way, by plugging in we obtain:

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c. 75.7

i think that is the right