Empirical Formula Practice

Empirical Formula Practice

KG - University

6 Qs

quiz-placeholder

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Empirical Formula Practice

Empirical Formula Practice

Assessment

Quiz

Chemistry

KG - University

Practice Problem

Hard

Used 216+ times

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6 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 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

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the empirical formula if you have 81.82% carbon and 18.18% hydrogen?

C3H8
CH4
C2H2
C4H10

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Given the following: 42.07% Na, 18.89% P, and 39.04% O, determine the empirical formula.

NaPO2
Na2PO3
Na3PO4
NaPO4

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the empirical formula if you have 36.84% nitrogen and 63.16% oxygen?

NO
N2O3
N2O4
N2O5

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

What is the empirical formula if you have 35.98% aluminum and 64.02% sulfur?

AlS

Al2S

AlS2

Al2S3

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

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