Molar Conversions

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Chemistry

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9th - 12th Grade

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Practice Problem

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Medium

Danielle Larsen

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6 Slides • 6 Questions

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.

Molar Conversions

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