问题
选择题
在氢氧化钾溶液中，已知钾离子与水分子的物质的量之比为a : b，溶液的密度为d g/cm3，则溶液的浓度为 ( )
|
A．
×100%
B．
%
C．
mol/L
D．
mol/L
答案
答案：D
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在氢氧化钾溶液中，已知钾离子与水分子的物质的量之比为a : b，溶液的密度为d g/cm3，则溶液的浓度为 ( )
|
A．×100%
B．%
C．mol/L
D．mol/L
答案：D
| 选择方框中的句子完成对话，其中有两项多余。 | |
| A: Hi, Li Lei, where are you going to spend your winter holiday this year? B: 1______ A: How are you going to get there? B: We are going there by plane. A: 2______ B: Next Monday. A: 3______ B: Thanks. What about you? A: 4______ I'd like to go back to see those villagers. I miss them very much. B: 5______ I think you must have a good time in your hometown.
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