CH10 – Percent Composition

Dates
- P1 – Friday, February 3rd
- P3 – Thursday, February 2nd
- P5 – Friday, February 3rd
Recap
- Mole map / units / reactions
- How do I draw?
- Example problem
New Idea – Mass Percent Composition
- determine the percent by mass of a compound given the formula
- assume 1 mole – convert to grams – add up – divide by total
- example
New Idea – Empirical Formula
- opposite of mass percent process
- assume 100g – grams to moles – divide by smoles – multiple til whole
- example
Homework 1
- No Homework (be ready to apply during next class)
- Bring LNB to class (for sure!) next time
Homework 2
- Look at the videos posted in the group
- Leave a positive (specific) comment on at least one of the posts about what worked well in the video
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