Molar Conversions

Molar Conversions

The Mole

• A convenient unit for scientist to use

• 1 mole is an easy number to represent the very small or very large numbers we are discussing.

• Molar Mass (g) = 1 Mole = 6.02x10²³ atoms

• A standard which can be used to convert between different units

Mole- Mass Conversions

1 mole = Molar mass of the element or Compound

Molar mass: Atomic mass given in grams

Multiple Choice

How many moles is 17g of water?

• 0.94mol

• 1.05mol

• 17mol

• 18.015mol

Multiple Choice

How many grams is 3.8 moles of Carbon Monoxide?

• 0.136g

• 28.01g

• 106.438g

• 3.8g

Mole- Particle (atoms)

1 mole = Avogadro's number

Avogadro's number= 6.02 x 10²³ atoms

Multiple Choice

How many moles is 12.5 x 10²³ atoms of an unknown compound?

• 2.08mol

• 6.02x10²³mol

• 2.08x10²³mol

• 12.5mol

Multiple Choice

Which conversions factor would be used to convert moles to atoms

• Moles/atoms

• atoms/Moles

Mole- Volume

Volume Standard: 22.4L

1 mole= 22.4L

Normally only used for liquids

Multiple Choice

Which conversion factor would be used to convert liters to moles?

• Moles/Liters

• Liters/Moles

• grams/liters

• liters/grams

Multiple Choice

Which conversion factor would be used to convert moles to liters?

• 22.4 liters / 1 mole

• 1 Mole / 22.4 liters

Conversion tips

• The unit you are looking for always goes on the top of the conversion factor

• If both numbers are on the top multiply them

• If one number is on the top and one is on the bottom divide.