在标准状况下，将aLNH3完全溶于1L水得到VmL氨水，溶液的密度为ρg∙cm-3，溶质的质量分数为ω，溶质的物质的量浓度为cmol/L。下列叙述中正确的是
①
②
③
④
⑤上述溶液中再加入VmL水后，所得溶液的质量分数大于0.5ω
| A．①②④ | B．②③④ | C．②④ | D．②③⑤ |
相关试题
It is often ______ that human beings are naturally equipped to speak.
| A．said | B．to say | C．saying | D．being said |
I can’t leave. She told me that I ______ stay here until she comes back.
| A．can | B．must | C．will | D．may |
—— Do you mind my opening the window? It’s a bit hot in here.
—— ______ , as a matter of fact
| A．Go ahead | B．Yes, my pleasure |
C．Yes, I do | D．Come on |
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| A．too much long | B．much too long |
C．long too much | D．too long much |
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