A.溶质的质量分数是24.0% |
B.溶液的物质的量浓度是2.4mol/L |
C.溶质和溶剂的物质的量之比是1:40 |
D.硫酸根离子的质量分数是19.2% |
24 |
120 |
28.8 |
0.2 |
144g |
600g |
144g |
120g/mol |
n |
V |
1.2mol |
0.5L |
456g |
18g/mol |
115.2g |
600g |
A.该溶液的物质的量浓度:
| ||
B.所得气体体积一定为44.8aL | ||
C.该溶液的质量分数:
| ||
D.向溶液中通入过量CO2,未见白色沉淀 |
A.C1=C2 | B.C1>2C2 | C.C1<2C2 | D.C1=2C2 |
A.0.2mol/L | B.0.25mol/L | C.0.45mol/L | D.0.225mol/L |
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