Calculating Molecular Formulas

Calculating Molecular Formulas

11th Grade

15 Qs

quiz-placeholder

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Calculating Molecular Formulas

Calculating Molecular Formulas

Assessment

Quiz

Science

11th Grade

Practice Problem

Hard

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

Standards-aligned

Created by

Lisa Thompson

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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 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

1 min • 1 pt

What is the empirical formula for N2S3?

NS

N3S2

N2S3

N1S1.5

Tags

NGSS.MS-PS1-1

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How many "C" are in CO2

2

1

0

3

Tags

NGSS.MS-PS1-1

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How many Carbons "C" are in C18H34O3

18

34

3

37

Tags

NGSS.MS-PS1-1

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the percent by mass of oxygen in MgO?

20%

40%

50%

60%

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following could be a molecular formula with the empirical formula of CH2O?

CH2O2

CHO

C3H5O3

C2H4O2

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the empirical formula of K2SO4?

K2SO4

KSO2

K2SO2

KSO8

Tags

NGSS.HS-PS1-7

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