问题:
将50g20%的氯化钾溶液稀释到5%,需要加水的质量为
A.50g
B.100g
C.150g
D.200g
将50g20%的氯化钾溶液稀释到5%,需要加水的质量为
A.50g
B.100g
C.150g
D.200g
A.50g
B.100g
C.150g
D.200g
参考答案: