题目

— What’s your favorite food? ( )— My favorite food______ pizza.A. is B. areC. am D. / 答案：【答案】A【解析】略 含有NaOH　20.0 g的稀溶液与足量的稀盐酸反应，放出28.7 kJ的热量．能正确表示该反应中和热的热化学方程式是 [　　] A． NaOH＋HCINaCI＋H2O　ΔH＝－28.7 kj/mol B． NaOH(aq)＋HC1(aq)NaCl(aq)＋H2O(1)　ΔH＝＋57.4 kJ/mol C． NaOH(1)＋HCl(1)NaCl(l)＋H2O(1)　ΔH＝－57.4 kJ/mol D． NaOH(aq)＋HCl(aq)NaCI(aq)＋H2O(1)　ΔH＝－57.4 kJ/mol