Section 1: Complete problems 34, 38-43, 45 - 48 and 58 on pages 60-61 of your textbook in your notebook. Remember that the answer to all calculation problems should have the correct number of sig figs!
1. A block of aluminum occupies a volume of 15.0 mL and weighs 40.5 g. What is its density?
2. Mercury metal is poured into a graduated cylinder that holds exactly 22.5 mL. The mercury used to fill the cylinder weighs 306.0 g. From this information, calculate the density of mercury.
3. What is the weight of the ethanol that exactly fills a 200.0 mL container?
The density of ethanol is 0.789 g/mL.
4. What volume of silver metal will weigh exactly 2500.0 g. The density of silver is 10.5 g/cm3.
Section 3: Study!! Look back over your notes and re-watch the videos. Make sure to check your email for the answer keys to the two worksheets from class today. I'll be in the SA office on 3L tomorrow morning if you need help.
Section 6: The two videos below will help you rewrite your post-lab answers with the correct number of sig figs.
Video 1 - this is a review of how to determine if a number is significant:
Determining Sig Figs
Video 2 - this video you MUST watch, as it contains the rules for sig figs when calculating a value:
Sig Fig Calculation Rules
Section 7: Complete the Accuracy & Precision AND the Chapter Review worksheets that you picked up today in class.