Question 1

Which of the following best describes the type of reaction for: $$\mathrm{Zn} + \mathrm{CuSO}_4 \rightarrow \mathrm{ZnSO}_4 + \mathrm{Cu}$$?

Accepted Answer

Single displacement

Question 2

A student mixes 2.0 mol of $$\mathrm{O}_2$$ with excess $$\mathrm{C}_3\mathrm{H}_8 in $$the reaction $$\mathrm{C}_3\mathrm{H}_8 + \mathrm{O}_2 \rightarrow \mathrm{CO}_2 + \mathrm{H}_2\mathrm{O}. $$How many moles of $$\mathrm{CO}_2$$ are produced?

Accepted Answer

1.5 mol

Question 3

What is the molarity of a solution made by dissolving 1.0 mol of $$\mathrm{NaCl} in 2.0 L of $$water?

Accepted Answer

$$0.5\ \mathrm{M}$$

Question 4

How much of a $$3.0\ \mathrm{M}$$ solution is needed to prepare $$1.0\ \mathrm{L} of$$ $$1.0\ \mathrm{M}$$ solution using the dilution equation $$M_1V_1 = M_2V_2$$?

Accepted Answer

$$0.33\ \mathrm{L}$$

Question 5

What is the concentration of $$\mathrm{Cl}^-$$ ions in a $$0.50\ \mathrm{M}$$ solution of $$\mathrm{CaCl}_2$$?

Accepted Answer

$$1.0\ \mathrm{M}$$

Question 6

An atom has a mass number of 40 and an atomic number of 20. How many neutrons does it have?

Accepted Answer

20

Question 7

Which element is an alkali metal?

Accepted Answer

Na

Question 8

What is the correct name for $$\mathrm{FeCl}_3$$?

Accepted Answer

Iron(III) chloride

Question 9

Which compound is ionic?

Accepted Answer

$$\mathrm{CaCl}_2$$

Question 10

Which molecule exhibits hydrogen bonding?

Accepted Answer

$$\mathrm{NH}_3$$

Question 11

What happens to the boiling point of water when salt is added?

Accepted Answer

It increases

Question 12

If the pressure of a gas is doubled at constant temperature, what happens to its volume according to Boyle's Law ($$P_1V_1 = P_2V_2$$)?

Accepted Answer

Volume halves

Question 13

Convert $$25^\circ\mathrm{C} to $$Kelvin.

Accepted Answer

$$298\ \mathrm{K}$$

Question 14

A mixture of gases has a total pressure of $$2.0\ \mathrm{atm}$$, and the partial pressure of $$\mathrm{O}_2 is$$ $$1.2\ \mathrm{atm}. $$What is the partial pressure of the other gas?

Accepted Answer

$$0.8\ \mathrm{atm}$$

Question 15

How much heat is required to raise the temperature of $$100\ \mathrm{g} of $$water by $$10^\circ\mathrm{C}$$? (Use $$q = mc\Delta T$$, $$c = 4.18\ \mathrm{J/g}^\circ\mathrm{C})$$

Accepted Answer

$$4180\ \mathrm{J}$$

Question 16

Is melting ice an endothermic or exothermic process?

Accepted Answer

Endothermic

Question 17

If $$[\mathrm{H}^+] = 1 	imes 10$$^{-3}$$\ \mathrm{M}$$, is the solution acidic or basic?

Accepted Answer

Acidic

Question 18

Which acid is stronger: one with $$K_a = 10$$^{-2}$$ or K_a$$ = $$10^{-6}$$?

Accepted Answer

$$K_a = 10$$^{-2}$$

Question 19

In the reaction $$\mathrm{Zn} + \mathrm{Cu}^{2+} \rightarrow \mathrm{Zn}^{2+} + \mathrm{Cu}$$, which species is oxidized?

Accepted Answer

$$\mathrm{Zn}$$

Question 20

A sample has a mass of $$20\ \mathrm{g}$$ and a volume of $$10\ \mathrm{mL}. $$What is its density?

Accepted Answer

$$2.0\ \mathrm{g/mL}$$

Chemistry 1151: Comprehensive Study Guide

Guida di studio - Domande di pratica

Study guide - Flashcard