某注射药液的配置方法如下:(1)把1.0g药品溶于水制成4.0ml溶液a; (2)取0.1ml溶液a,加水稀释至1.0ml

问题描述:

某注射药液的配置方法如下:(1)把1.0g药品溶于水制成4.0ml溶液a; (2)取0.1ml溶液a,加水稀释至1.0ml

某药品溶液a浓度:
1.0g/4.0ml=0.25g/1.0ml ;
某注射药液的浓度:
(0.25g/1.0ml)*0.1ml/1.0ml
=0.025g/1.0ml .