Search Header Logo

Empirical Formula Bank

Authored by Lan Vu

Chemistry

10th - 12th Grade

Empirical Formula Bank
AI

AI Actions

Add similar questions

Adjust reading levels

Convert to real-world scenario

Translate activity

More...

    Content View

    Student View

30 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A compound consists of 72.2% magnesium(Mg) and 27.8% nitrogen(N) by mass. What is the empirical formula?

Mg4N3
MgN2
Mg3N
MgN

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which of the following is considered an empirical formula?

CH3COOH
C6H12O6
H2O

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

You are given the following percentages: 40.05% S and 59.95% O. Find the empirical formula for these elements.

SO
SO2
SO3
SO4

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which pair has the same empirical formula?

NaCrO4 and Na2Cr2O7
C2H4O2 and C6H12O6
C3H6Oand C2H6O2
CH4 and C2H6

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A compound consists of 72.2% magnesium(Mg) and 27.8% nitrogen(N) by mass. What is the empirical formula?

Mg4N3
MgN2
Mg3N
MgN

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Glycerol has a molar mass of 92.09g/mol. Its percent composition is: 39.12% C, 8.75% H, and 51.12% O. What is the molecular formula for glycerol?

C2H3O2
CH2O
C2H4O2
C3H8O3

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

2.40 g of an explosive, J, contains 0.473 g of nitrogen. J also contains 33.8% carbon and 1.41% hydrogen by mass. The remainder of J is oxygen.


What is the empirical formula of J?

C4HNO2

CH2N2O

C2HNO2

CHNO

Access all questions and much more by creating a free account

Create resources

Host any resource

Get auto-graded reports

Google

Continue with Google

Email

Continue with Email

Classlink

Continue with Classlink

Clever

Continue with Clever

or continue with

Microsoft

Microsoft

Apple

Apple

Others

Others

Already have an account?