题目内容:
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,250ml B:260ml,240ml C:300ml,200ml D:245ml,255ml E:350ml,150ml
参考答案:
答案解析:
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,250ml B:260ml,240ml C:300ml,200ml D:245ml,255ml E:350ml,150ml