Liquids and Solids Chem2045 HW

Help me study for my Chemistry class. I’m stuck and don’t understand.

Chapter 10 HW. Please explain why you chose each answer. Please show all work for all math problems. Again, please explain why you chose each answer – thank you!

– Don’t forget to complete the end of chapter exercises using the link at the end as well.

1. Which of the following is an example of intermolecular forces?

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2.The strongest intermolecular forces present in a sample of C8H18 are

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3.Identify the major attractive force between the particles of a sample of CaCl2(aq).

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4.Which of the following substances has the weakest intermolecular forces?

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5.Given the graph below, why the boiling point of H2Se is higher than H2S

Boiling Points.jpg

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The stronger London dispersion forces in H2Se increase the boiling point

6.Which of the following elements or compounds has the lowest boiling point?

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7.What is the enthalpy of vaporization ( kJ/mol) of a compound that has a vapor pressure of 555mmHg at 311 K and 55.5 mmHg at 211 K? (R = 8.31 J/(K· mol))

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8.How much heat (in kJ) is consumed when 255 g of water vaporizes at 373 K? The enthalpy of condensation of water at 373 K is –40.7 kJ/mol.

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9.What is the name for the following phase change? C10H22(l) => C10H22(s)

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10.Which of the following phase changes is exothermic?

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11.Which of the following is an example of a network covalent solid?

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12.Which of the following has the highest melting point?

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BCl3

13.Consider the following phase diagram of the generic compound. What type of equilibrium is associated with line BC

Phase Diagram1.jpg

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14.Consider the following phase diagram of the generic compound. What process does the change from point G to point F corresponds to?Phase Diagram1.jpg

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15.Consider the following phase diagram of the generic compound. How will its vapor pressure change with increased temperature?Phase Diagram1.jpg

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16. Consider the following heating curve of the generic compound. What segment is associated with the enthalpy of vaporization?Heating Curve.jpg

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Solve the following AFTER-THE-CHAPTER exercises listed below. Show your work where necessary. You do not need to rewrite the questions.

Click on this link to access the questions in the “exercises” for chapter 10 below ( 10; 18; 21; 27; 38; 53; 54;58;68;69).There is no login required

https://openstax.org/books/chemistry-atoms-first-2e/pages/1-introduction

Chapter 10: 10; 18; 21; 27; 38; 53; 54;58;68;69

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