10-minute Quiz : Chapter 38

10-minute Quiz : Chapter 38

9th - 12th Grade

10 Qs

quiz-placeholder

Similar activities

5.2.1 Hess' Law

5.2.1 Hess' Law

12th Grade

10 Qs

AS Chem Review

AS Chem Review

11th - 12th Grade

15 Qs

Practice quiz on Molar Volume and Percent Composition

Practice quiz on Molar Volume and Percent Composition

10th Grade

15 Qs

Kc and Equilibrium

Kc and Equilibrium

12th Grade

12 Qs

3.1.6.2 Equilibrium constant Kc for homogeneous systems

3.1.6.2 Equilibrium constant Kc for homogeneous systems

9th - 12th Grade

12 Qs

Ideal Gas Law

Ideal Gas Law

10th - 11th Grade

12 Qs

Chemistry NCFE 2018-19 #16-28

Chemistry NCFE 2018-19 #16-28

11th Grade

13 Qs

Mole & the Molar Mass

Mole & the Molar Mass

9th Grade

10 Qs

10-minute Quiz : Chapter 38

10-minute Quiz : Chapter 38

Assessment

Quiz

Chemistry

9th - 12th Grade

Hard

Created by

Chemistry Aristo

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

0.580 g of a hydrocarbon contains 0.480 g of carbon and 0.100 g of hydrogen. At room temperature and pressure, 24.0 cm³ of this gaseous hydrocarbon has a mass of 0.0870 g. What is the molecular formula for this hydrocarbon?

(Relative atomic masses: H = 1.0, C = 12.0; molar volume of gas at room temperature and pressure = 24 dm³ mol⁻¹)

A. C₂H₅
B. C₃H₅
C. C₄H₁₀
D. C₆H₁₅

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Consider the reaction between nitrogen and hydrogen to form ammonia.

N₂(g) + 3H₂(g) → 2NH₃(g)

The rate of formation of NH₃(g), measured at room temperature and pressure, is 0.300 mol min⁻¹. What is the rate of consumption of H₂(g) under the same conditions?

(Molar volume of gas at room temperature and pressure = 24 dm³ mol⁻¹)

A. 3.6 dm³ min⁻¹

B. 4.8 dm³ min⁻¹

C. 10.8 dm³ min⁻¹

D. 21.6 dm³ min⁻¹

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the number of molecules in 8.0 g of oxygen?

(Relative atomic mass: O = 16.0; Avogadro constant = 6.02 × 10²³ mol⁻¹)

A. 1.5 × 10²³
B. 3.2 × 10²³
C. 4.3 × 10²³
D. 6.0 × 10²³

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the volume of oxygen, measured at room temperature and pressure, required for the complete combustion of 1.0 dm³ of butane?

2C₄H₁₀(g) + 13O₂(g) → 8CO₂(g) + 10H₂O(l)

A. 1.0 dm³
B. 4.0 dm³
C. 6.5 dm³
D. 13 dm³

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following gases has the largest volume, measured at room temperature and pressure?

(Relative atomic masses: H = 1.0, C = 12.0, N = 14.0, Cl = 35.5; molar volume of gas at room temperature and pressure = 24 dm³ mol⁻¹)

A. 0.10 g of hydrogen
B. 0.17 g of ammonia
C. 0.32 g of methane

D. 0.35 g of chlorine

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

0.30 mol of zinc is added to 750 cm³ of 1.0 M hydrochloric acid. What is the volume of hydrogen formed, measured at room temperature and pressure?

Zn(s) + 2HCl(aq) → ZnCl₂(aq) + H₂(g)

(Molar volume of gas at room temperature and pressure = 24 dm³ mol⁻¹)

A. 300.0 dm³
B. 75.6 dm³
C. 22.7 dm³
D. 7.2 dm³

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Direction: Questions 7 to 9 refer to the experiment.

In an experiment, 100 cm³ of hydrogen was mixed with 25 cm³ of oxygen and then ignited by an electric heater, as shown in the diagram. Given that the reaction occurred at 150°C, what was the gas volume at the end of the reaction?

(Assume that all gas volumes were measured at the same temperature and pressure.)

A. 50 cm³
B. 100 cm³
C. 125 cm³
D. 150 cm³

Create a free account and access millions of resources

Create resources
Host any resource
Get auto-graded reports
or continue with
Microsoft
Apple
Others
By signing up, you agree to our Terms of Service & Privacy Policy
Already have an account?