13.實驗測得之硝酸銨莫耳溶解熱約為多少千卡/莫耳?
(A) +3000.
(B)-3000.
(C) +60.
(D)-60.
(E) +250.

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統計: A(0), B(0), C(0), D(1), E(1) #2856271