Q: Which of the following is the correct net ionic equation for the reaction between aqueous solutions of silver nitrate and sodium chloride?

$\text{Ag}^+ (aq) + \text{Cl}^- (aq) \rightarrow \text{AgCl} (s)$

Question 1

Which of the following best describes the process of balancing a chemical equation?

Accepted Answer

Adjusting the coefficients in front of compounds to ensure the same number of each atom on both sides

Question 2

A sample contains 0.5 mol of NaCl. What is the mass of this sample? $(	ext{Na} = 23.0\ 	ext{g/mol},\ 	ext{Cl} = 35.5\ 	ext{g/mol})$

Accepted Answer

$29.25\ 	ext{g}$

Question 3

Which of the following statements about ionic and covalent bonds is correct?

Accepted Answer

Ionic bonds involve the transfer of electrons from a metal to a nonmetal.

Question 4

What is the electron configuration for a neutral atom of phosphorus $(Z = 15)$?

Accepted Answer

$1s^2\ 2s^2\ 2p^6\ 3s^2\ 3p^3$

Question 5

Which of the following best explains why water $(	ext{H}_2	ext{O})$ has a bent molecular geometry?

Accepted Answer

The lone pairs on the oxygen atom repel the bonding pairs, causing a bent shape.

Question 6

A reaction has a theoretical yield of $10.0\ 	ext{g}$ but produces only $7.5\ 	ext{g}$ of product. What is the percent yield?

Accepted Answer

$75\%$

Question 7

Which of the following elements has the highest electronegativity?

Accepted Answer

Fluorine

Question 8

Which quantum number describes the shape of an orbital?

Accepted Answer

Angular momentum quantum number $(l)$

Question 9

A compound contains $40.0\%$ carbon, $6.7\%$ hydrogen, and $53.3\%$ oxygen by mass. What is its empirical formula?

Accepted Answer

$	ext{CH}_2	ext{O}$

Question 10

Which of the following best describes a redox reaction?

Accepted Answer

A reaction in which electrons are transferred from one species to another

Question 11

Which of the following is the correct Lewis structure for carbon dioxide $(	ext{CO}_2)$?

Accepted Answer

O=C=O, with each oxygen atom having two lone pairs

Question 12

Which of the following best explains why sodium chloride $(	ext{NaCl})$ conducts electricity when dissolved in water?

Accepted Answer

NaCl dissociates into ions, which move freely and carry charge

Question 13

Which of the following is a correct statement about periodic trends?

Accepted Answer

Ionization energy decreases down a group

Question 14

A solution is prepared by dissolving $5.0\ 	ext{g}$ of NaOH in enough water to make $250\ 	ext{mL}$ of solution. What is the molarity of the solution? $(	ext{NaOH} = 40.0\ 	ext{g/mol})$

Accepted Answer

$0.20\ 	ext{M}$

Question 15

Which of the following best describes the AXE notation for the molecular geometry of ammonia $(	ext{NH}_3)$?

Accepted Answer

AX3E1

Question 16

Which of the following is the correct net ionic equation for the reaction between aqueous solutions of silver nitrate and sodium chloride?

Accepted Answer

$	ext{Ag}^+ (aq) + 	ext{Cl}^- (aq) ightarrow 	ext{AgCl} (s)$

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