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](/uploads/image/z/12295143-63-3.jpg?t=%E5%8C%96%E5%AD%A6%E9%85%8D%E7%BD%AE%E6%BA%B6%E6%B6%B2%E9%97%AE%E9%A2%98%2C%E8%8B%B1%E6%96%87.Make+a+100ml+solution+of+50%25+%28w%2Fv%29+polyethylene+glycol.+The+bottle+you+have+available+is+labled+PEG+3350+and+has+the+following+information+%28average+molecular+weight+%3D+3350g%2Fmole%29.+Describe+how+to+make+this+solution.+%28R)
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。