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Understanding Moles and Avogadro's Number

Authored by Christine Knowlton

Science

12th Grade

NGSS covered

Used 9+ times

Understanding Moles and Avogadro's Number
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23 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What is Avogadro’s number?

3.14×10103.14 \times 10^{10}

6.022×10236.022 \times 10^{23}

1.67×10−241.67 \times 10^{-24}

9.81×1029.81 \times 10^{2}

Tags

NGSS.HS-PS1-7

NGSS.HS-PS1-5

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Which unit is used to express the mass of a substance in the metric system?

Liter (L)

Mole (mol)

Gram (g)

Meter (m)

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the unit g/mol represent?

The number of atoms in a molecule

The molar mass = mass of one mole of a substance

The volume of a gas

The charge of an ion

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Which of the following best defines a molecule?

The smallest particle of an element

A pure substance made of only one kind of atom

Two or more atoms chemically bonded together

A symbolic representation of a compound

Tags

NGSS.MS-PS1-1

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

If you have 1 mole of water molecules, how many molecules do you have?

1.00×1031.00 \times 10^{3}

6.022×10236.022 \times 10^{23}

1.00×1061.00 \times 10^{6}

3.00×1083.00 \times 10^{8}

Tags

NGSS.HS-PS1-7

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which conversion factor would you use to convert moles to particles?

1 mol=1 g1 \text{ mol} = 1 \text{ g}

1 mol=6.022×1023 particles1 \text{ mol} = 6.022 \times 10^{23} \text{ particles}

1 g=6.022×1023 particles1 \text{ g} = 6.022 \times 10^{23} \text{ particles}

1 mol=1000 g1 \text{ mol} = 1000 \text{ g}

Tags

NGSS.HS-PS1-7

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

A sample contains 3.01×10233.01 \times 10^{23} molecules of CO 2_2 . How many moles of CO 2_2 are present?

0.250.25 mol

0.50.5 mol

11 mol

22 mol

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