A.1mol/L | B.2mol/L | C.4mol/L | D.5mol/L |
3mol×0.78g |
0.03L×78g |
n |
V |
0.15mol |
0.03L |
A.小于 | B.等于 | C.大于 | D.无法判断 |
A.250mL1mol/LAlCl3溶液 | B.200mL2mol/LMgCl2溶液 |
C.1L2.5mol/LNaCl溶液 | D.300mL5mol/LKClO3溶液 |
A.3:4:3 | B.3:2:3 | C.1:1:1 | D.1:2:3 |
A.NaCl的摩尔质量是58.5g/mol | ||
B.将wga%的NaCl溶液蒸发掉
| ||
C.将1体积cmol/L的硫酸用水稀释为5体积,稀溶液的浓度为0.2cmol/L | ||
D.将5.85gNaCl晶体溶入1000mL水中,制得0.1mol/L的NaCl溶液 |
A.称取7.68gCuSO4,加入500mL水 |
B.称取12.0g胆矾,配成500mL溶液 |
C.称取8.0gCuSO4,配成500mL溶液 |
D.称取8.0g胆矾,配成500mL溶液 |
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