LESSON
Mole & Molar Mass Conversions
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15 slides

Mole & Molar Mass Conversions

Body text

Mole

  • 6.022x10^23 atoms

  • molar mass of atom/molecules

Mole to Mole

  • 2Na = 2 moles of Na

  • If I increase the moles of Na to 6

  • How many moles of I2 will there be?

Q.

If moles of NaI is increased to 4, how many moles of I2 will there be?

answer
2
alternatives
2

Molar Mass

  • molar mass = 1 mole

  • CO2

  • C=12 O=16x2

  • 44 g/mol

Q.

CO2 = 44 g/mol

How much would 3 moles of CO2 equal?

answer choices

132

33

404

Q.

Molar Mass of CH4

answer choices

12 g/mol

16 g/mol

4 g/mol

Q.

Molar Mass of K2CO3

answer choices

138.205 g/mol

35 g/mol

78.2 g/mol

Q.

Molar Mass of Ag2O

answer choices

231.7 g/mol

56.2 g/mol

734.4 g/mol

Mass converted to molar mass

to find the moles of any molecule

mole = mass/molar mass

20 grams of H2O is how many moles?

Molar mass of H2O = 18

Moles = 20/18

1.1 moles of H2O

Q.

88 grams of H2O (18 g/mol) is how many moles?

answer choices

4.88 moles

.54 moles

6.67 moles

Q.

52 grams of O2 (32 g/mol) is how many moles?

answer choices

1.63 moles

.615 moles

26 moles

Q.

73 grams of AlBr3 (267 g/mol) is how many moles?

answer choices

.273 moles

263 moles

4.23 moles

Q.

800 grams of 2NH3 (34 g/mol) is how many moles?

answer choices

23.52 moles

.0425 moles

834 moles

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