Unit 6: The Mole

What is Avogadro's number?

• 6.02 x 10²³

• 1 mole

• 600 million

• 6.02

How many moles are in 6.02 x 10²³ molecules of H₂O?

• 1 mole

• 2 moles

• 6.02 moles

• 602000000000000000000000 moles

One mole of carbon dioxide (CO₂) contains 6.02 x 10²³ _____.

• atoms

• formula units

• ions

• molecules

A mole is:

• The SI unit for mass

• The SI unit for the amount of a substance

• The SI unit for volume

• The SI unit for area

What is the conversion factor that should be used to determine how many molecules are there in 4.00 moles of glucose, C₆H₁₂O₆?

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What converting from moles to the number of particles, moles is multiplied by:

• an equivalent value

• a conversion factor

• the number of atoms in the formula

• the mass of the substance

Why is the mole used in chemistry?

• The mass of atoms is in AMUs which is too hard to convert to grams.

• A dozen is not a scientific amount.

• Chemists needed to make chemistry easier to understand.

• It makes counting large numbers of small particles easier.

SELECT ALL CORRECT ANSWERS - The mole can be used to measure:

• The amount of atoms in an element

• The amount of molecules in a covalent substance

• The amount of formula units in an ionic compound

• The amount of mass an object has

What is correct equation that should be used to determine how many molecules there are in 0.75 moles of (NH₄)₃PO₄?

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How is moles abbreviated?

• M

• m

• mol

• ml