Author Question: A 3.140 molal solution of NaCl is prepared. How many grams of NaCl are present in a sample ... (Read 163 times)

bobbie · **on:** Mar 21, 2021

Question 1

A 20.0-g sample of methyl alcohol (CH₃OH, molar mass = 32.04 g/mol) was dissolved in 39.0 g of water. The mole fraction of CH₃OH is _____.

◦ 0.288
◦ 0.624
◦ 0.339
◦ 4.47
◦ 0.224

Question 2

A 3.140 molal solution of NaCl is prepared. How many grams of NaCl are present in a sample containing 1.994 kg of water?

◦ 626.1 g
◦ 107.1 g
◦ 222.0 g
◦ 365.9 g
◦ none of these are correct

mbcrismon · **Reply #1 on:** Mar 21, 2021

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