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Empirical vs Molecular

Authored by Lisa Thompson

Science

10th Grade

NGSS covered

Empirical vs Molecular
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15 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

An empirical formula:

is a formula that calculates the coefficients of a compound in a balanced equation.

is the simplest whole-number ratio of moles of elements in the compound.

2.

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

Tags

NGSS.MS-PS1-1

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the molecular formula if the empirical formula is C2H5 and the molecular molar mass is 58.14 g/mol?

C2H5

C4H10

C1H2.5

C4H8

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of these is NOT an empirical formula?

CH2

C2H5

C6H4

C3H7

C5H17

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A formula that shows the smallest whole-number mole ratio of the elements of a compound, and may or may not be the same as the actual molecular formula.

Empirical Formula

Molecular Formula

Stoichiometry

Chemical Reaction

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the main difference between an empirical formula and a molecular formula?

An empirical formula shows the exact number of atoms of each element in a compound, while a molecular formula shows the simplest whole-number ratio.

An empirical formula shows the simplest whole-number ratio of atoms in a compound, while a molecular formula shows the exact number of atoms of each element.

An empirical formula is used for ionic compounds, while a molecular formula is used for covalent compounds.

An empirical formula is always larger than a molecular formula.

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

All of the above

Tags

NGSS.MS-PS1-1

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