化学配置溶液问题,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. (R
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化学配置溶液问题,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. (R
化学配置溶液问题,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).
主要问题是计算各个量,不知道average molecular weight是不是包括水啊?求大神指导!
化学配置溶液问题,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. (R
average molecular weight是指聚乙烯醇的平均分子量,当然不能包括水.配制50%质量浓度的溶液,应该是称取50g样品,加水定容至100mL
相对分子质量当然不包括水的，就比如水的相对分子质量是18，而聚乙醇的相对分子质量为3350g/mole。题目给的聚乙醇的浓度不知道，具体数字算不出来。