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Safari File Edit View History Bookmarks Window Help ezto.mheducation.com chemistry question I chegg.com Urgent Prayer Request The Dillons got the call! abbyl CHEMIST R Chapter 13 X Question 13 (of 20) 13 10.00 points 1 out of 3 attempts Enter your answer in the provided box. At 25°C, the vapor pressure of pure water is 23.76 mmHg and that of a certain seawater sample is 23.09 mmHg. Assuming that seawater contains only Naci, estimate its molal concentration eBook & Resources References Assistance Check My Work View Hint View Qu Print Question Help Report a Problem 51% D Fri 0:31 AM Chapter 13 Screen Shot 2015-0...3.11 AM instructions help 4 Save & Exit Submit Screen Shot 2015-0...8.17 AM XLSX Chem Exp Chart 1MG 4670.jpg IMG 4908.jpg 7.jpg ne creen Shot 2015-0...0.31 PM

Explanation / Answer

23.09 = 23.76 X
X = mole fraction water = 0.971 = moles water / moles water + moles Na+ + moles Cl-

moles water = 0.971
moles Na+ + moles Cl- = 0.0330
moles NaCl = 0.0330/2 =0.0165

mass water = 0.971 mol x 18.02 g/mol=17.49 g

m = 0.0165 mol/ 0.01749 Kg=0.9433

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