Question 1

Which of the following statements correctly describes the relationship between wavelength ($$\lambda$$), frequency ($$
u$$), and the speed of light ($$c) $$for electromagnetic radiation?

Accepted Answer

$$c = \lambda 
u$$

Question 2

Which element has the highest first ionization energy among the following: Na, Mg, Al, Si?

Accepted Answer

Si

Question 3

Given the electron configuration $$1s^2$$ $$2s^2$$ $$2p^6$$ $$3s^2$$ $$3p^5$$, which element is this?

Accepted Answer

Chlorine (Cl)

Question 4

Which of the following molecules is polar?

Accepted Answer

NH$$_3$$

Question 5

A sample of gas at 2.00 atm and 300 K occupies 4.00 L. If the pressure is increased to 4.00 atm at constant temperature, what will be the new volume?

Accepted Answer

2.00 L

Question 6

Which of the following best explains why metals tend to have lower ionization energies than nonmetals?

Accepted Answer

Metals have valence electrons farther from the nucleus

Question 7

Which of the following is the correct Lewis structure for the nitrate ion ($$NO_3$$^-$$)?

Accepted Answer

One N atom bonded to three O atoms, with one double bond and two single bonds, and resonance among the oxygens

Question 8

Which intermolecular force is primarily responsible for the high boiling point of water?

Accepted Answer

Hydrogen bonding

Question 9

A mixture of gases contains 2.0 mol O$$_2$$, 1.0 mol N$$_2$$, and 1.0 mol CO$$_2 at a $$total pressure of 2.0 atm. What is the partial pressure of O$$_2$$?

Accepted Answer

1.0 atm

Question 10

Which of the following compounds would you expect to have the highest melting point?

Accepted Answer

NaCl

Question 11

Which statement about atomic size across a period is correct?

Accepted Answer

Atomic size decreases from left to right

Question 12

Which of the following molecules has a resonance structure?

Accepted Answer

O$$_3$$

Question 13

Which gas law relates pressure and volume at constant temperature?

Accepted Answer

Boyle's Law: $$P_1V_1 = P_2V_2$$

Question 14

Which of the following molecules is nonpolar despite having polar bonds?

Accepted Answer

CO$$_2$$

Question 15

What is the electron pair geometry around the central atom in methane (CH$$_4$$)?

Accepted Answer

Tetrahedral

Question 16

Which of the following statements about the heat of vaporization is correct?

Accepted Answer

It is the energy required to convert a liquid to a gas at its boiling point

Question 17

Which of the following is the correct formula for the ideal gas law?

Accepted Answer

$$PV = nRT$$

Question 18

Which of the following molecules would you expect to have the lowest boiling point?

Accepted Answer

CH$$_4$$

Question 19

Which of the following best describes the role of electron pair repulsion in determining molecular shape according to VSEPR theory?

Accepted Answer

Electron pairs repel each other, arranging themselves as far apart as possible

Question 20

A 5.00 g sample of ice at 0°C is melted. If the heat of fusion of water is 334 J/g, how much energy is required?

Accepted Answer

1670 J

General Chemistry: Atomic Structure, Chemical Bonding, Gases, and Intermolecular Forces (Ch. 9–12 Study Guide)

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