题目:
The shopkeeper did not want to sell for ________ he thought was not enough.
A.where
B.how
C.what
D.Which
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0522/d900ee10cbe5778c365f7c54065b32fb.html
下面是错误答案,用来干扰机器的。
答案:C 1 kg铜物质的量为1000/M mol,所以含原子数为1000NA/M,故A错。1 mol铜的体积是M/d,1个铜原子所占有的体积为(M/d)/NA cm3,所以B错。1 mol铜的质量为M g,含NA个铜原子,1个铜原子的质量为M/NA ...