Free Printable Chemistry Final Exam Review

Worksheets

Chemistry Final Exam Review

Total questions: 50

Worksheet time: 8hrs 35mins

Name

Class

Date

Balance the following reaction:

___C₄H₁₀ (g) + ___O₂ (g) → ___CO₂ (g) + ___H₂O (g)

1:3:4:5

1:4:4:5

2:8:13:10

2:13:8:10

Balance the following reaction:

___Pb(OH)₂ (s) → ___PbO (s) + ___H₂O (g)

1:1:1

2:1:2

1:1:2

2:2:1

The empirical formula of a compound is: C₂H₃O₂(molar mass 35 g/mol)_.The molar mass of the molecular formula is 140g/mol. Which is the Molecular formula?

C₂H₃O₂

C₈H₁₂O₈

C₄H₆O₄

CHO

How many moles are in 23 grams of lithium?

1.1 mole

2.2 mole

3.3 mole

4.4 mole

Unable to determine

How many grams are in 2.0 moles of water? (Hint: Find the molar mass of water first.)

18.01 g

20.02 g

33.0 g

36.02 g

The following is what type of reaction:
PbCl₂ + AgNO₃ → Pb(NO₃)₂ + AgCl

Synthesis

Decomposition

Single Replacement

Double Replacement

The following is what type of reaction:
NH₃ + HCl → NH₄Cl

Synthesis

Decomposition

Single Replacement Replacement

Double Replacement Replacement

What type of chemical reaction is this?
Al(OH)₃ → Al₂O₃ + H₂O

Decomposition

Combustion

Synthesis

Single Replacement

___C₃H₈ +___O₂ --> ___CO₂ + ___H₂O

1,5,3,4

2,10,6,8

already balanced

1,5,5,4

10.

__Al + __Fe₃N₂ -->__AlN + __Fe

already balanced

4,2,4,6

2,1,2,3

1,2,1,3

11.

__Na + __Cl₂ --> __NaCl

1,1,2

2,1,2

2,1,1

already balanced

12.

How many particles are in a mole?

602

602 million

602 moles

6.02 x 10²³

13.

Calculate the molar mass of KOH.

28 g/mol

56 g/mol

84 g/mol

112 g/mol

14.

Calculate the molar mass of Ba(C₂H₃O₂)₂

255.4 g/mol

237.3 g/mol

228.3 g/mol

196.3 g/mol

15.

Calculate the molar mass of Cu₂O.

37 g/mol

45 g/mol

79.5 g/mol

143 g/mol

16.

What is the percent by mass of sodium in NaCl?

39%

61%

35%

65%

17.

What is the percent by mass of fluorine in CaF_{2 ,}which has a molar mass of 78 g/mol)?

24%

49%

51%

65%

18.

What is the percent composition of benzene, C₆H₆?

C = 50.%

H = 50.%

C = 85.7 %

H = 14.3%

C = 92.2%

H = 7.8%

C = 71.9%

H = 28.1%

19.

2 KClO₃ → 2 KCl + 3 O₂
How many moles of oxygen are produced when 6.7 moles of KClO₃ decompose completely?

6.7 mol

1.0 mol

10.1 mol

4.5 mol

20.

2Na + 2H₂O → 2NaOH+ H₂

How many grams of hydrogen are produced if 120 g of Na are available?

5.3 g

2.6 g

690 g

45 g

21.

CH₄ + 2 O₂ → CO₂ + 2 H₂O
How many moles of carbon dioxide are produced from the combustion of 110 g of CH₄?

13.7 mol

2.75 mol

6.11 mol

6.85 mol

22.

2 NaClO₃ (s) --> 2NaCl (s) +3 O₂ (g)
12.00 moles of NaClO₃ will produce how many grams of O₂?

256 g of O₂

576 g of O₂

288 g O₂

23.

4 Al + 3 O₂ –> 2 Al₂O₃ How much aluminum would be needed to completely react with 45 grams of O₂?

1.05 moles

3.75 moles

1.875 grams

1.875 moles

24.

What is a solvent?

The substance that does the dissolving in a solution.

The substance that is being dissolved in a solution.

The mixing of different substances.

The process in which neutral molecules lose or gain electrons

25.

What is the molarity of a 0.5L sample of a solution that contains 60.0 g of sodium hydroxide (NaOH)?

$M\ =\ \frac{mol}{L}$

(HINT: Convert g to mol with the molar mass of NaOH first)

0.8 M

1.5M

3.0M

6.0M

26.

Calculate the molarity of the following solution: 1.0 mole of KCl in 750 mL of solution. (HINT: 1000 mL = 1 L)

$M\ =\ \frac{mol}{L}$

0.750 M

99 M

1.3 M

2.0 M

27.

What volume, in milliliters, of 10.0 M NaOH is needed to prepare 300.0 mL of 2.00 M NaOH by dilution?

0.067 mL

60.0 mL

100 mL

125 mL

28.

What is the molarity of a solution made by diluting 26.5 mL of 6.00M HNO₃ to a volume of 250.0 mL?

15.9 M

0.636 M

0.642 M

1.59 M

29.

What volume of 1.50 M KBr can be made from 15.6 mL of concentrated KBr with a molarity of 9.65 M?

150. mL

151 mL

1.00 L

100. mL

30.

The pH of a solution is 2.0. What is the [OH^-] concentration?

1x10^-12M

12 M

1x10^-2M

2 M

31.

What is the pH of a solution where the [H+] is 1.0 x 10^-11?

32.

What is the [H⁺] if the pH is 4.0?

1.0 x 10^-10 M

1.0 x 10^-4M

1.0 x 10^-14 M

1.0 x 10^-7 M

33.

An Arrhenius base:

donates H+

accepts H+

produces H+

produces OH-

34.

An Arrhenius acid:

donates H+ to another substance

accepts H+ from another substance

produces H+

produces OH-

35.

A Bronsted Lowry base:

donates H+ to another substance

accepts H+ from another substance

produces H+

produces OH-

36.

A scientist needs to store 28.0 moles of xenon gas at STP in the lab. What size gas tank will he need?

628 L

473 L

219 L

376 L

37.

The pressure of a 6.5 L sample of oxygen gas is measured to be 3.8 atm. If the gas is transferred into a 12 L tank, what is the new pressure?

6.6 atm

3.9 atm

4.5 atm

2.1 atm

38.

What is the pressure of a car tire that had an initial pressure of 1.8 atm but was heated from 38°C to 123°C?

0.9 atm

2.3 atm

1.6 atm

3.4 atm

39.

A sample of gas containing 9.2 moles is transferred from an 13 L tank to a 23 L tank. What is the new number of moles that can be stored in the tank?

10.2 mol

13.7 mol

19.1 mol

16.3 mol

40.

Three gases are mixed together in a container with a total pressure of 4.8 atm. If two of the gases have pressures of 1.2 atm and 1.5 atm, what is the pressure of the third gas?

2.5 atm

1.8 atm

2.1 atm

1.3 atm

41.

What is the volume of a balloon that contains 3.7 moles of helium at 75°C and 5.1 atm?

37 L

13 L

45 L

21 L

42.

When 0.250 moles of a gas is placed in a container at 25 °C, it exerts a pressure of 700 mm Hg. What is the volume of the container?

0.557 Liters

6.57 Liters

8.74 Liters

0.0087 Liters

43.

A 15.50 gram sample of a gas exerts a pressure of 1.40 atmospheres when held in an 8.00 liter at 22 °C. What is the molar mass (grams/mol) of the gas?

33.5 g/mol

0.0298 g/mol

6.57 g/mol

62.2 g/mol

44.

A gas is heated from 263K to 298K. The volume is increased from 24.0L to 35.0L. If the original pressure was 101.33 kPa, what is the new pressure?

78.7 kPa

167.2 kPa

129.7 kPa

61.8 kPa

45.

A weather balloon has a volume of 105 L at 98.3 kPa when the temperature is 318 K. What is the volume at 293 K and 106.4 kPa?

89.4 L

0.32 L

93.8 L

3.13 L

46.

What type of a solution is 60g NaNO₃ at 40ºC in 100g H₂O?

Saturated

Unsaturated

Supersaturated

47.

What type of a solution is 100g KNO₃ at 40ºC in 100g H₂O?

Saturated

Unsaturated

Supersaturated

48.

What type of a solution is 260g sugar at 50ºC in 100g H₂O?

Saturated

Unsaturated

Supersaturated

49.

How many grams of K₂Cr₂O₇, are soluble in 100 g of water at 95 ºC?

83 grams

75 grams

40 grams

12 grams

50.

25 grams of NaCl are dissolved in 100 mL of water at 60 C. How many more grams need to be dissolved for the solution to be saturated?

13 grams

25 grams

6 grams

38 grams

Reset

Chemistry Final Exam Review

Total questions: 50

Worksheet time: 8hrs 35mins

Similar Resources on Wayground