如何配制pH为7.3的PBS缓冲液?
人气:445 ℃ 时间:2020-04-27 01:10:23
解答
取磷酸氢二钠1.9734g与磷酸二氢钾0.2245g,加水使溶解成1000ml,即得磷酸盐缓冲液(pH7.3)
推荐
猜你喜欢
- He felt ---at the news that he failed the exam A.frustrating B.rustration C.rustrated D.rustrate
- 如何画英语脑图
- 用所给词的适当形式填空,1,Tom's (.result)of the English exam is pretty good.
- 孩子挤出来(改成比喻句)
- 2x的平方-3y-2(x的平方-2y)
- 一道简单的物理题(质点运动)
- 甲,乙两地相距162千米,一列慢车从甲站出发,每小时走48千米,一列快车从乙站开出,每小时走60千米,试问:1.两列火车同时相向而行,多长时间可以相遇?2.两车同时反向而行,几小时后两车相距270千米?3.若两车相向而行,慢车先开出1小时,
- Look!That woman looks like our teacher .we are going to put it on the day after tomorrow.