Molecular Formula Determination Problems

Molecular Formula Determination Problems

11th Grade

10 Qs

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Molecular Formula Determination Problems

Molecular Formula Determination Problems

Assessment

Quiz

Chemistry

11th Grade

Practice Problem

Easy

Created by

Brian Nogay

Used 3+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The empirical formula of a compound is NO2. It's molecular mass is 92g/mol

What is its molecular formula?

NO

NO2

N2O

N2O4

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The empirical formula of a compound is CH2. Its molecular mass is 70g/mol.

What is its molecular formula?

CH2

C2H2

C5H10

C5H5

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A compound is found to be 40% carbon, 6.7% hydrogen, and 53.5% oxygen.

Its molecular mass is 60 g/mol. What is its molecular formula?

CHO

CH2O

C2H4O2

CH2O2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A compound is 64.9% carbon, 13.5% hydrogen, and 21.6% oxygen.

Its molecular mass is 74g/mol. What is its molecular formula?

CH2O

C4H10O

C4H8O

C4H10O2

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A compound is 54.5% carbon, 9.1% hydrogen, and 36.4% oxygen. Its molecular mass is 88g/mol. What is its molecular formula?

CH2O

C4H6O

C4H8O2

C4H8O

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the empirical formula of a compound 75% carbon and 25% hydrogen?

CH2

C2H4

CH3

CH4

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the empirical formula of a compound that is 52.7% potassium and 47.3% chlorine?

K2Cl

KCl

KCl2

K2Cl2

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