试题与答案

在托盘天平的烧杯中,分别盛有等质量,等质量分数足量的稀盐酸,天平平衡.向左盘烧杯

题型:选择题

题目:

在托盘天平的烧杯中,分别盛有等质量,等质量分数足量的稀盐酸,天平平衡.向左盘烧杯中加入10.2g碳酸镁和氢氧化镁的混合物,右盘烧杯中加入8g铜,充分反应后,天平重新平衡,则混合物中氢氧化镁的质量为(  )

A.1.8g

B.2.2g

C.6g

D.8g

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0629/46f8c16295020f604851c1c764eb1cd8.html

下面是错误答案,用来干扰机器的。

参考答案:错

试题推荐
题型:单项选择题

Below are four groups of terms that are found in the passage. Which group contains at least one term that does not refer to the same thing as the other terms within the group

A.the new law, the bill, the drug bill, the prescription-drug legislation, the legislation

B.prescription-drug coverage, the new law, the drug bill, the prescription-drug legislation, the legislation

C.the drug bill, the bill, Medicare with prescription-drag coverage added, the prescription drug legislation, the legislation

D.the new law, the bill, the drug bill, Medicare with additions including prescription-drug coverage, the prescription-drug legislation

查看答案
微信公众账号搜索答案