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在1L水中,加入500ml20%的H2SO4溶液,已知密度为1.14g/cm3,求该硫酸溶液的摩尔浓度(1/2H2SO4)是多少?


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考题 问答题在1L水中,加入500ml20%的H2SO4溶液,已知密度为1.14g/cm3,求该硫酸溶液的摩尔浓度(1/2H2SO4)是多少?

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考题 填空题s=”this is the mainstring”,sub=”string”,strindex(s,sub)是()

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