80.0 grams of NaOH is dissolved in 3.0 moles of H?0. What is the mole fraction of NaOH in this solution?
A).20
B).37
C).40
D).64
E).79

Name: 80.0 grams of NaOH is dissolved in 3.0 moles of H?0. What is the mole fraction of NaOH in this solution? A).20 B).37 C).40 D).64 E).79
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Question

Quizplus · Accepted Answer

The mole fraction for a compound indicates (moles of given compund) / (total moles of system). In this question, there are two moles of NaOH and five total moles in the system. Thus, the mole fraction is expressed as 2/5, or .40.

800 Grams of NaOH Is Dissolved in 3