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?

Group of answer choices

hydrogen bonding

covalent bonding

ionic bonding

metallic bonding

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

Group of answer choices

London dispersion forces

dipole–dipole forces

covalent bonds

hydrogen bonding

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

Group of answer choices

dipole -ion interactions

dipole-dipole interactions

hydrogen bonding

London dispersion forces

ionic bonding

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

Group of answer choices

F2

I2

Cl2

Br2

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

Group of answer choices

The stronger London dispersion forces in H2Se increase the boiling point

The stronger dipole-dipole forces in H2Se increase the boiling point

Hydrogen bonding in H2Se increases the boiling point

The stronger covalent bonding in H2Se increases the boiling point

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

Group of answer choices

CO2

SiO2

SO2

PbO2

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))

Group of answer choices

12.6

12556

19.13

13.3

13.589

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.

Group of answer choices

576

14.2

103.8

1.04×104

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

Group of answer choices

solidification

liquefaction

condensation

melting

fusion

10.Which of the following phase changes is exothermic?

Group of answer choices

crystallization

vaporization

melting

sublimation

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

Group of answer choices

SiO2 (s)

CO2 (s)

SO2 (s)

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

Group of answer choices

AlCl3

PCl3

BrCl3

BCl3

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

Group of answer choices

solid<=> liquid

solid<=> gas

liquid<=> gas

solid <=> liquid <=> gas

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

Group of answer choices

condensation

vaporization

sublimation

freezing

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

Group of answer choices

increase

decrease

no change

there is no vapor pressure shown on diagram

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

Group of answer choices

DE

AB

BC

CD

EF

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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