化學(xué)配置溶液?jiǎn)栴},英文.
化學(xué)配置溶液?jiǎn)栴},英文.
Make a 100ml solution of 50% (w/v) polyethylene glycol. The bottle you have available is labled PEG 3350 and has the following information (average molecular weight = 3350g/mole). Describe how to make this solution. (Remember percent = #g/100ml).
主要問(wèn)題是計(jì)算各個(gè)量,不知道average molecular weight是不是包括水啊?求大神指導(dǎo)!
Make a 100ml solution of 50% (w/v) polyethylene glycol. The bottle you have available is labled PEG 3350 and has the following information (average molecular weight = 3350g/mole). Describe how to make this solution. (Remember percent = #g/100ml).
主要問(wèn)題是計(jì)算各個(gè)量,不知道average molecular weight是不是包括水啊?求大神指導(dǎo)!
英語(yǔ)人氣：556 ℃時(shí)間：2020-05-22 10:42:59
優(yōu)質(zhì)解答
average molecular weight是指聚乙烯醇的平均分子量,當(dāng)然不能包括水.配制50%質(zhì)量濃度的溶液,應(yīng)該是稱(chēng)取50g樣品,加水定容至100mL
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