Mole Notes

Bellwork 1/15- Table

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Molar Mass

Molar mass - the mass of 1 mole of a substance
Steps to calculate Molar Mass
1. List elements in formula
2. Copy mass of each element from the Periodic Table
3. Multiple each mass by the number of atoms in the formula
4. Add each mass together

Multiple Choice

Calculate the molar mass of KOH.

• 28 g/mol

• 56 g/mol

• 84 g/mol

• 112 g/mol

Multiple Choice

Calculate the molar mass of Mg(OH)_2.

• 33.2 g/mol

• 41.3 g/mol

• 86.9 g/mol

• 58.3 g/mol

Multiple Choice

What is the mass of 2 moles of propane (C3H8)?

• 44 g
• 88 g
• 22 g
• 13 g

Match

Match the following

• Number of hydrogen (H) in this formula

• Number of oxygen (O) atoms in this formula

• Number of different types of atoms in this formula

• Total number of atoms in this formula

10

5

2

15

• 10

• 5

• 2

• 15