A.若样品不含任何杂质,则m<1.8 |
B.若m=1.8,则样品中一定含有杂质A,可能含有固体KOH |
C.若m=1.8,则样品中至少含有杂质A或固体KOH的一种 |
D.若样品中不含A,则盐酸的溶质质量分数不小于7.3% |
18 |
x |
36.5 |
y |
40 |
5.6g |
56 |
5.6g |
18 |
z |
5.11g |
100g |
A.120t | B.108t | C.96t | D.150t |
A.20 | B.32 | C.48 | D.96 |
A.4.4g | B.2.8g | C.1.4g | D.0.8g |
© 2017-2019 超级试练试题库,All Rights Reserved.