HW for collecting: Welcome to Unit 8!! 8.1 Do...

Welcome to Unit 8!! 8.1 Do Now:

Binder HW for collecting:

Notes: DO NOW

(Seat)

Chemistry Reference Table

Welcome to Unit 8!! 8.1 Do Now:

Binder HW for collecting:

Notes: DO NOW

(Seat)

Chemistry Reference Table

Welcome to Unit 8!! 8.1 Do Now:

Binder HW for collecting:

Notes: DO NOW

(Seat)

Chemistry Reference Table

Welcome to Unit 8!! 8.1 Do Now:

Binder HW for collecting:

Notes: DO NOW

(Seat)

Chemistry Reference Table

The mass of one mole of a molecule

1 mol H2O = 18 grams H2O = 6.022 x 1023 H2O

• GFM Example 1: What is the gram formula mass of K2CO3?

• GFM Example 2: What is the gram formula mass of FeCl3

Percent Composition Percent composition is the percent (%)

of each element in a compound

Formula for Percent Composition:

PC Example 1: What is the percent composition of K in the compound

K2O?

Step 1: Find the mass of each element.

Step 2: Get the total molecular mass by adding the mass of each element.

Step 3: Divide the total mass of each element by the molecular mass and then multiply by 100 to get percent composition.

PC Example 2: What is the percent composition of oxygen in potassium chlorate (KClO3)?

PC Example 3: What is the percent composition of oxygen in (C6H12O6)?

Classwork: PRACTICE TIME

• Practice makes perfect! Complete the CW – and earn your stamp!

HOMEWORK

• Complete your 8.1 HW