论文部分内容阅读
一、选择题 1.能说明同体积的H_2、Cl_2经反应成二倍于H_2体积、的HCI气,从而导出Cl_2、H_2都是双原子分子的原理或定律是( ) [A]勒沙特列原理 [B]质量守恒定律 [C]阿佛加德罗定律 [D]分析物质百分组成并计算 2.将百分比浓度为a％,物质的量浓度为Clmol/L的稀H_2SO_4蒸发掉一定量的水,使之百分比浓度为20％,此时物质的量浓度的C_2mol,则C_1和C_2的关系
First, multiple-choice questions 1. Can explain that the same volume of H 2 , Cl 2 reacts twice as much as H 2 volume, HCI gas, thus derived the principle or law of Cl 2 , H 2 are all diatomic molecules () [A] Le Chatelier Principle [B] Law of conservation of mass [C] Avogadro’s Law [D] Analysis of percent composition of matter and calculation 2. Percentage concentration is a%, amount of substance is Clmol/L Diluted H_2SO_4 evaporated a certain amount The water, so that the percentage concentration of 20%, at this time the amount of material concentration of C_2mol, then the relationship between C_1 and C_2