配制75%乙醇溶液100ml,需95%乙醇A.60mlB.75mlC.80mlD.79mlE.85ml
配制75%乙醇溶液100ml,需95%乙醇
A.60ml
B.75ml
C.80ml
D.79ml
E.85ml
相关考题:
用95%的乙醇配制75%的乙醇500ml,下面配制正确的是( )。A.量取95%乙醇395ml,用水稀释至500mlB.量取95%乙醇395ml,加入水105ml,混匀C.量称95%乙醇375ml,用水稀释500mlD.量取95%乙醇375ml,加入125ml水混匀
用95%和45%的乙醇配制75%的乙醇溶液500ml,应取95%和45%的乙醇各多少毫升A.250ml,250mlB.200ml,300mlC.300ml,200mlD.225ml,275mlE.275ml,225ml
用95%和45%的乙醇配制75%的乙醇溶液500ml,应取95%和45%的乙醇各A.250ml,250mlB.260ml,240mlC.300ml,200mlD.245ml,255mlE.350ml,150ml
用95%和45%的乙醇配制75%的乙醇溶液500ml,应取95%和45%的乙醇各多少体积A:250ml,250mlB:260ml,240mlC:300ml,200mlD:245ml,255mlE:350ml,150ml
用95%和45%的乙醇配制75%的乙醇溶液500ml,应取95%和45%的乙醇各A:250ml,250mlB:260ml,240mlC:300ml,200mlD:245ml,255mlE:350ml,150ml
用95%的乙醇配制75%的乙醇500ml,下面配制正确的是()。A、量取95%乙醇395ml,用水稀释至500mlB、量取95%乙醇395ml,加入水105ml,混匀C、量称95%乙醇375ml,用水稀释500mlD、量取95%乙醇375ml,加入125ml水混匀
单选题下列哪种溶液适用于大规模防癌普查的固定液?( )A95%乙醇溶液B75%乙醇溶液C氯仿乙醇溶液D乙醚乙醇溶液E卡诺固定液