Molar Mass & Avogadro’s World

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Atoms, moles, and molar mass basics

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Sciscanresearch 2026

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Molar Mass & Avogadro’s WorldOnline version Atoms, moles, and molar mass basics by Sciscanresearch 2026 1 Who pioneered the study of counting atoms and molecules? a Avogadro b Newton c Einstein d Dalton 2 What is Avogadro's Number? a 6.02 x 10^22 b 1.75 x 10^23 c 6.02 x 10^23 d 3.14 x 10^23 3 What does a mole represent in count? a Exactly 6.02 x 10^20 units b One gram of any substance c Exactly 6.02 x 10^23 units d The mass in grams of a substance 4 What is the chemical formula for table sugar (sucrose)? a NaCl b C2H5OH c C6H12O6 d C12H22O11 5 How many atoms are in one molecule of H2SO4 (sulfuric acid)? a 5 b 3 c 4 d 2 6 What is the molar mass of Ozone (O3)? a 32 g/mol b 16 g/mol c 48 g/mol d 64 g/mol 7 What is the molar mass of NaCl with Na=23 and Cl=35.5? a 90.5 g/mol b 23 g/mol c 58.5 g/mol d 35.5 g/mol 8 If you have 3 moles of Ca, what is the mass given M(Ca)=40.08 g/mol? a 80.16 g b 40.08 g c 120.24 g d 6.02 x 10^23 g 9 How many particles are in 2.0 moles of Ca? a 40.08 particles b 6.02 x 10^23 particles c 1.20 x 10^24 particles d 3.01 x 10^23 particles 10 What is the sequence to find molecules in 90 g of H2O (M=18 g/mol)? a Divide mass by Avogadro's number then multiply b Find molar mass then divide c Find moles: 90/18=5; multiply by 6.02x10^23 d Multiply mass by Avogadro's number then divide

Molar Mass & Avogadro’s WorldOnline version

Atoms, moles, and molar mass basics

by Sciscanresearch 2026

Who pioneered the study of counting atoms and molecules?

Avogadro

Newton

Einstein

Dalton

What is Avogadro's Number?

6.02 x 10^22

1.75 x 10^23

6.02 x 10^23

3.14 x 10^23

What does a mole represent in count?

Exactly 6.02 x 10^20 units

One gram of any substance

Exactly 6.02 x 10^23 units

The mass in grams of a substance

What is the chemical formula for table sugar (sucrose)?

NaCl

C2H5OH

C6H12O6

C12H22O11

How many atoms are in one molecule of H2SO4 (sulfuric acid)?

What is the molar mass of Ozone (O3)?

32 g/mol

16 g/mol

48 g/mol

64 g/mol

What is the molar mass of NaCl with Na=23 and Cl=35.5?

90.5 g/mol

23 g/mol

58.5 g/mol

35.5 g/mol

If you have 3 moles of Ca, what is the mass given M(Ca)=40.08 g/mol?

80.16 g

40.08 g

120.24 g

6.02 x 10^23 g

How many particles are in 2.0 moles of Ca?

40.08 particles

6.02 x 10^23 particles

1.20 x 10^24 particles

3.01 x 10^23 particles

What is the sequence to find molecules in 90 g of H2O (M=18 g/mol)?

Divide mass by Avogadro's number then multiply

Find molar mass then divide

Find moles: 90/18=5; multiply by 6.02x10^23

Multiply mass by Avogadro's number then divide

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Molar Mass & Avogadro’s World

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About this activity

Created by

Download the paper version to play

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Molar Mass & Avogadro’s WorldOnline version

by Sciscanresearch 2026

Who pioneered the study of counting atoms and molecules?

What is Avogadro's Number?

What does a mole represent in count?

What is the chemical formula for table sugar (sucrose)?

How many atoms are in one molecule of H2SO4 (sulfuric acid)?

What is the molar mass of Ozone (O3)?

What is the molar mass of NaCl with Na=23 and Cl=35.5?

If you have 3 moles of Ca, what is the mass given M(Ca)=40.08 g/mol?

How many particles are in 2.0 moles of Ca?

What is the sequence to find molecules in 90 g of H2O (M=18 g/mol)?

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