The molality of a solution of ethyl alchohol in water is 1.54 mol/kg. How many grams of alchohol is dissolved in 2.50 kg of water?

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Answer 1 · 2018-05-04T10:27:47

Given,

#"molarity" = 1.54"m"#

#m_(H_2O) = 2.50"kg"#

Recall,

#"molarity" = "mol"/m_(H_2O)#

Hence,

#"mol"_(EtOH) = "molarity" * m_(H_2O) = 3.85"mol" * (43"g")/(EtOH) approx 166"g"#

of ethanol are contained in this solution, given your data.