Question 1

Which of the following statements best describes an ionic bond?

Accepted Answer

An ionic bond is formed by the complete transfer of valence electron(s) from a metal to a nonmetal, resulting in electrostatic attraction between oppositely charged ions.

Question 2

What is the correct formula for a compound formed between aluminum and oxygen?

Accepted Answer

$$\mathrm{Al_2O_3}$$

Question 3

Which of the following is the correct name for $$\mathrm{$$FeCl_3$$}$$?

Accepted Answer

Iron(III) chloride

Question 4

A sample of lithium contains $$4.33 	imes 10$$^{22}$$ atoms. How many moles of lithium are present in the sample? (N_A = 6.022$$ 	imes $$10^{23}$$\ \mathrm{mol}^{-1}$$)

Accepted Answer

$$0.0719\ \mathrm{mol}$$

Question 5

Which of the following compounds is a Type 3 (molecular) compound?

Accepted Answer

$$\mathrm{N_2O_4}$$

Question 6

What is the percent by mass of oxygen in lactic acid ($$\mathrm{C_3H_6O_3}$$)? (Atomic masses: C = 12.01, H = 1.008, O = 16.00)

Accepted Answer

$$53.28\%$$

Question 7

Which of the following is the correct empirical formula for a compound with a mass composition of $$26.7\% C$$, $$2.2\% H$$, and $$71.1\% O$$?

Accepted Answer

$$\mathrm{$$CHO_2$$}$$

Question 8

Which of the following is the correct name for $$\mathrm{P_4S_3}$$?

Accepted Answer

Tetraphosphorus trisulfide

Question 9

What is the molar mass of ammonium sulfate, $$\mathrm{(NH_4$)_2SO_4}$$? (Atomic masses: N = 14.01, H = 1.008, S = 32.07, O = 16.00)

Accepted Answer

$$132.14\ \mathrm{g/mol}$$

Question 10

Which of the following is the correct formula for sodium carbonate?

Accepted Answer

$$\mathrm{Na_2CO_3}$$

Question 11

A white powder is analyzed and found to have an empirical formula of $$\mathrm{P_2O_5}. If $$the compound has a molar mass of $$283.88\ \mathrm{g/mol}$$, what is its molecular formula? (Molar mass of $$\mathrm{P_2O_5} is$$ $$141.94\ \mathrm{g/mol})$$

Accepted Answer

$$\mathrm{P_4O_{10}}$$

Question 12

Which of the following is the correct name for $$\mathrm{NO_2$}$$?

Accepted Answer

Nitrogen dioxide

Question 13

How many oxygen atoms are present in $$0.0282$$ mol of sucrose ($$\mathrm{C$$_{12}$$H_{22}O$$_{11}}$)?

Accepted Answer

$$1.87 	imes 10$$^{23}$$

Question 14

Which of the following is the correct formula for iron(III) nitrate?

Accepted Answer

$$\mathrm{Fe(NO_3$)_3}$$

Question 15

Which of the following is a correct statement about Lewis dot symbols?

Accepted Answer

The number of dots equals the number of valence electrons, which is the group number for main group elements.

Question 16

Which of the following is the correct name for $$\mathrm{H_2SO_4} in $$aqueous solution?

Accepted Answer

Sulfuric acid

Question 17

A company needs $$63.0$$ mmol of hydrochlorothiazide (HCT, $$\mathrm{C_7H_8ClN_3O_4S_2}) $$for a production process. What is the mass required? (Molar mass = $$297.74\ \mathrm{g/mol})$$

Accepted Answer

$$18.8\ \mathrm{g}$$

Question 18

Which of the following is the correct formula for ammonium sulfate?

Accepted Answer

$$\mathrm{(NH_4$)_2SO_4}$$

Question 19

Which of the following best explains why sodium chloride ($$\mathrm{NaCl}) is $$electrically neutral?

Accepted Answer

The total positive charge from sodium ions equals the total negative charge from chloride ions.

Chapter 5: Ionic and Covalent Compounds – Structured Study Notes

Guida di studio - Domande di pratica

Study guide - Flashcard