Percent Composition, Empirical and Molecular Formula

Percent Composition, Empirical and Molecular Formula

11th Grade

15 Qs

quiz-placeholder

Similar activities

12/6 Review for Quiz 12/7 (Graded)

12/6 Review for Quiz 12/7 (Graded)

9th - 12th Grade

17 Qs

Empirical Formula and Percentage Composition

Empirical Formula and Percentage Composition

11th Grade - University

15 Qs

Empirical Formulas Practice

Empirical Formulas Practice

10th Grade - University

15 Qs

Unit 6 Part 2 Quiz

Unit 6 Part 2 Quiz

11th Grade

18 Qs

Empirical Formula

Empirical Formula

10th Grade - University

15 Qs

Percent Comp and Empirical Formula Test

Percent Comp and Empirical Formula Test

11th Grade

15 Qs

Empirical Formula and Molecular Formula

Empirical Formula and Molecular Formula

10th Grade - University

15 Qs

Mole Toolkit Review Quiz

Mole Toolkit Review Quiz

9th - 12th Grade

17 Qs

Percent Composition, Empirical and Molecular Formula

Percent Composition, Empirical and Molecular Formula

Assessment

Quiz

Science

11th Grade

Hard

NGSS
HS-PS1-7, MS-PS1-1

Standards-aligned

Created by

Lisa Thompson

FREE Resource

15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The molecular and empirical formula of a compound are __________ the same.

always

sometimes

never

one and

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Chloroform, a toxic substance that may cause severe liver, kidney, and heart damage, has the percent composition by mass of this compound is 10.06% carbon, 0.84% hydrogen, and 89.09% chlorine. What is its molar mass in g/mol?

124.42

121.39

119.37 

74.51

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Chloroform, a toxic substance that may cause severe liver, kidney, and heart damage, has the percent composition by mass of this compound is 10.06% carbon, 0.84% hydrogen, and 89.09% chlorine. If a compound which shares the same empirical formula as chloroform is known to have a molar mass of 223.53g/mol, what is the compound’s mole ratio with chloroform?

2

3

4

5

Tags

NGSS.HS-PS1-7

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Do the diagrams have the same molecular formula?

Yes

No

Tags

NGSS.MS-PS1-1

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following is NOT needed to calculate percent mass composition?

Molar Mass of each specific element

Molar Mass of Compound

Avogadro's Number

Division

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Find the percentage composition of Mg in Mg3(PO4)2.


27.48% Mg

43.11% Mg

16.00% Mg

12.63% Mg

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A formula with the lowest whole number ratio of elements in a compound is called

Molecular Formula

Chemical Formula

Empirical Formula 

Distance Formula

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?