Answer:

Explanation:
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In this case, since the Gibbs free energy of any process is related with the enthalpy change, temperature and entropy change as shown below:

For a chemical reaction it is simply modified to:

Thus, since the enthalpy of reaction is given as -304.2 kJ and the entropy as -414.2 J/K (-0.4142 kJ/K), at 775 K the Gibbs free energy of reaction turns out:

Whose result means this is a nonspontaneous reaction.
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Cheese is the answer.
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Answer:
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Explanation:
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The correct answer is b. In a single-displacement reaction one element replaces another one, and because of BrINClHOF we know that hydrogen must have a 2 with it when it's by itself. Since calcium is +2 and chlorine is -1, you have to cross the charges. So it would be CaCl2.