4.00g |
40g/mol |
1.40g |
28g/mol |
1.60g |
32g/mol |
则混合气体的平均摩尔质量为
4.00g+1.40g+1.60g |
0.1mol+0.05mol+0.05mol |
又相同条件下,气体的摩尔质量之比等于密度之比,
所以该混合气体的密度是相同条件下氢气密度的
35g/mol |
2g/mol |
故选D.
4.00g |
40g/mol |
1.40g |
28g/mol |
1.60g |
32g/mol |
4.00g+1.40g+1.60g |
0.1mol+0.05mol+0.05mol |
35g/mol |
2g/mol |