A.①② | B.③④ | C.⑤ | D.②③⑥ |
S |
100g+S |
A. | B. | C. | D. |
A.在25℃时向100gKNO3饱和溶液中加入0.1gNaCl固体,所得溶液的质量是100.1g |
B.20℃时,NaCl的溶解度是36g,则该温度下100gNaCl饱和溶液中溶质的质量为36g |
C.欲将100g质量分数为10%的稀盐酸变成20%,可采取蒸发掉一半水实现 |
D.20℃时,NaCl的溶解度是36g,而KNO3的溶解度是31.6g,则该温度下NaCl饱和溶液的质量一定比KNO3的饱和溶液的质量大 |
A.氧化钠 | B.氧化钙 | C.氧化钾 | D.氢氧化钠 |
A.
| B.
| ||||
C.
| D.
|
A.100mL、54.35mL | B.100mL、55.5mL |
C.250mL、54.35mL | D.250mL、55.5mL |
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