The heat of solution of calcium chloride is -121 kj/mol. given that the lattice energy of calcium chloride is -2258 kj/mol and the heat of hydration of a chloride ion is -338 kj/mol calculate the heat of hydration of a calcium ion.

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.