A.①和④ | B.②和③ | C.③④⑤ | D.①②③④⑤ |
1g |
64g/mol |
1 |
64 |
1g |
80g/mol |
1 |
80 |
1 |
64 |
1 |
80 |
1 |
64 |
1 |
80 |
1 |
64 |
1 |
80 |
1 |
64 |
1 |
80 |
1 |
64 |
1 |
80 |
A.尼古丁的摩尔质量是162g |
B.尼古丁中C、H、O 三种元素的质量比为 10:14:2 |
C.尼古丁中氮元素的质量分数为17.3% |
D.尼古丁是由26个原子构成的物质 |
A.54% | B.28% | C.27% | D.无法计算 |
A.3:7 | B.1:2 | C.4:7 | D.3:4 |
A.0.21mol | B.0.35mol | C.0.5mol | D.0.75mol |
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