hw for collecting: welcome to unit 8!! 8.1 do...
TRANSCRIPT
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