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初中迎考总复习系列练习三（化学计算部分）广东廖伟山东吴敏一、进挥回（每题有ｌ～２个正确答案）１．下列各物质中含碳量最高的是（）Ａ．ＣＯＢ．ＣＯＺＣ．ＨＺＣＺＯ４Ｄ．ＣＺＨ６Ｏ２．金属Ｒ的氯化物中含氯７４．７８％，该金属的原子量是４７．９，则Ｒ在氯化物...
Junior High School Welcome to the General Review Series Exercise 3 (Chemical Computing Section) Guangdong Liao Wei Shandong Wu Minyi, Into the Swing (each question has l ~ 2 correct answers) 1. The highest carbon content of the following substances is () A. COB. COZC. HZCZO4D. CZH6O2. The chloride of metal R contains 74.78% of chlorine, the atomic weight of this metal is 47.9, then R is in chloride...