江西省宜春市宜丰中学2023-2024学年高三上学期11月期中化学试题
12023—2024（上）江西省宜丰中学11月高三期中考试化学试卷可能用到的相对原子质量：H:1C:12O:16Na:23Cl:35.5一、单选题(每题2分，共42分）1.NA是阿伏伽德罗常数的值,下列说法正确的是A.相同条件下,质量相等的CO和CO2所含的碳原子数目之比为711∶B.常温下，0.1mol∙L−1的溶液中氮原子数目为0.2NAC.Na2CO3溶液中Na+和CO32−个数比为21∶D.标准状况下,1molN2和O2的混合气体总体积约为22.4L2．下列说法不正确的是A．天然氨基酸均为无色晶体，熔点较高，难溶于乙醚B．在碱催化下，苯酚和甲醛可缩聚成网状结构的热固性酚醛树脂C．大豆蛋...
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