【多选题】If a woman suffers from iron deficiency, what can she do to bounce back?
B.
to take more exercises
C.
to take iron supplements
【简答题】已知浓盐酸的密度为 1.19 g ·mL -1 , 其中 HCl 的 质量分数 为 37% 。则浓盐酸中 HCl 的物质的量浓度 为 mol · L -1 ; 欲配制浓度为 0.10 mol · L -1 的稀盐酸 500 mL , 需取上述浓盐酸 mL 。
【单选题】(P45)(2015.10单3;2015.4单6)太平天国后期,提出《资政新篇》这一具有资本主义色彩改革方案的人是( )
【简答题】She suffers from a rare ________ of the brain.
【单选题】She suffers from mumps, which _______ a kind of infectious disease.
【简答题】Almost everyone suffers from a headache sometimes.But some people suffer from repeated, frequent headaches. What is headache? What causes it? What can be done about a headache? What research is being ...
【单选题】She suffers from heart disease ____________ she had to give up her job last year.
【简答题】已知浓盐酸的质量分数为37.5%,密度为1.19 kg.dm-3,计算该溶液的: (1)物质的量浓度; (2)质量摩尔浓度; (3)HCl和H2O的摩尔分数。
【多选题】已知浓盐酸的质量分数为37%,则计算该浓盐酸的的物质的量浓度时,还需要用到的数据有