Moles and Molar Mass Review

The molar mass of an element is equal to its...

• Atomic mass (from the periodic table)

• Atomic number (from the periodic table)

• Oxidation number

• Valence electrons

Molar mass is in units of ________.

• grams
• grams/mole
• mole
• moles/gram

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1 mole of anything is equal to:

• 6.02

• 6.02 x 10²³

• 12

• 12.602 x 10²³

The molar mass of calcium is 40.08 g/mol. This means that 1 mole of calcium has a mass of:

• 4.008 grams

• 40.08 grams

• 20 grams

• 20.04 grams

What is the molar mass of oxygen?

• 8 g/mol

• 16 g/mol

• 32 g/mol

• 6 g/mol

Tags

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What is the molar mass of cyanide (CN-).

• 13 g/mol

• 24.02 g/mol

• 26.02 g/mol

• 42.02 g/mol

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What is the molar mass of platinum?

• 106.42 g/mol

• 78 g/mol

• 46 g/mol

• 195.08 g/mol

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Which of the following has the most atoms?

• 1 mole of oxygen

• 1 mole of carbon

• 1 mole of iron

• These all have the same number of atoms

What is the molar mass of silver?

• 47 g/mol

• 79 g/mol

• 107.87 g/mol

• 196.97 g/mol

Tags

NGSS.HS-PS1-1

If 1 mole of water has a mass of 18.02 grams. How many water molecules are there in 18.02 grams of water?

• 18.02

• 18

• 6.02 x 10²³

• None of the above

Tags

NGSS.HS-PS1-7