Phys 115 HW 6 - 1.1/1 pointsAll Submissions NotesQuestion:...

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1. 1/1 points All Submissions Notes Question: ZumChemP6 17.E.014. Calculate the sodium ion concentration when  65.0  mL of  3.2   M  sodium  carbonate is added to  25.0  mL of  1.6   M  sodium bicarbonate.       M     2. 1/1 points All Submissions Notes Question: ZumChemP6 17.E.018. A bottle of wine contains  12.5 % ethanol by volume. The density of ethanol  (C 2 H 5 OH) is 0.789 g/cm 3 . Calculate the concentration of ethanol in wine in  terms of mass percent and molality.  mass percent     molality 2.45   m     3. 1.5/1.5 points All Submissions Notes Question: ZumChemP6 17.E.026. (a) Use the following data to calculate the enthalpy of hydration for calcium  chloride and calcium iodide. calcium chloride    kJ calcium iodide    kJ (b) Based on your answers to part (a), which ion, Cl  -  or I  - , is more  strongly attracted to water?  iodide chloride     Explain.
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  *Lattice energy was defined in Chapter 8 as the energy change for the  process M + ( g ) + X  - ( g MX( s ).     4. 1.5/1.5 points All Submissions Notes Question: ZumChemP6 17.E.028. Which ion in each of the following pairs would you expect to be more  strongly hydrated? (a)  Mg 2+  Na +      Why?    (b)  Be 2+  Mg 2+      Why?    (c)  Fe 3+  Fe 2+      Why?    (d)  F -  Br -      Why?    (e)  Cl  -  ClO 4 -      Why?    (f)  ClO 4 -  SO 4 2-      Why?   
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    5. 1.5/1.5 points All Submissions Notes Question: ZumChemP6 17.E.030. Which solvent, water or carbon tetrachloride, would you choose to dissolve  each of the following? (a) CH
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This note was uploaded on 03/08/2012 for the course PHYS 115 taught by Professor Pedigo during the Spring '08 term at University of Washington.

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Phys 115 HW 6 - 1.1/1 pointsAll Submissions NotesQuestion:...

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