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HW Quiz

HW Quiz. MrsCrane’sclasses are finding the density of a gas (CO 2 ) in the lab. Group 1 collects the following data: Mass of test tube, water, and dry Alka-Seltzer = 36.456 g Mass of test tube, water, and dissolved A-S = 36.258 g Volume of Erlenmeyer Flask filled w/ water = 152.1 mL

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HW Quiz

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  1. HW Quiz MrsCrane’sclasses are finding the density of a gas (CO2) in the lab. Group 1 collects the following data: • Mass of test tube, water, and dry Alka-Seltzer = 36.456 g • Mass of test tube, water, and dissolved A-S = 36.258 g • Volume of Erlenmeyer Flask filled w/ water = 152.1 mL • Volume of water in E. flask after A-S dissolves = 72.9 mL Using the data that group 1 collected, what is the density of CO2? Show all work and take calculations to the correct # of significant figures.

  2. Agenda • Unit 1 Test this Wednesday!! • Lab Test Thurs/Fri • Practice Problem: Density of a Gas • Review Density Quiz • Whiteboard Unit 1 Review Homework: • Study for Unit 1 Test

  3. Warm Up 8-19-13 A 25 cm by 31cm sheet of gold foil has a mass of 10.25g. Gold has a density of 19.30g/mL. Answer the following. Show all work, etc. • What is the volume of the gold foil? • What is the area of the gold foil? • What is the thickness of the gold foil?

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