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Safari File Edit View History Bookmarks Window Help 54% D Wed 10:49 AM a E ezto.mheducation.com Chapter 14 Chemistry question I Cheg Updated July Events B&R; i Mail Abigail R Looper Outlook k A Abigail Looper Chem 1120: Summer 2015 Section O41 CHEMISTRY Scree Chapter 14 instructions I help 2015-0 4 Save & Exit submit X Question 13 (of 17) 13 10.000 points 1 out of 3 attempts Assistance Be sure to answer all parts. Check My Work The molar heats of fusion and vaporization of argon are 1.30 and 6.30 kJ/mo respectively, View Hint and argon's melting point and boiling point are-189.35C and -185.850 C, respectively. View Qu Calculate the entropy changes for the fusion and vaporization of argon. AS JIK mol Question Help Report a Problem AS J/K mol vap

Explanation / Answer

S = NLv/T  

where Lv = molar latent heat of vaporisation

so S fus = 1300 J/mol/(273-189.35)K

                15.54 jmol-1 K-1

S vap = 6300 JMol-1/ (273-185.85) K

          = 72.289 Jmol-1K-1

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