(Answered) When nh4no3s is dissolved in water the solution that is

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When NH4NO3(s) is dissolved in water, the solution that is formed is cold.
a) For the process of dissolving NH4NO3(s) in water, indicate for each of ΔS, ΔH, and ΔG if the value is negative, zero, or positive. Why?
b) For each of ΔSsys, ΔSsur,and ΔSuniverse, indicate if the value is negative, zero, or positive. Why?

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