# Friday, Oct. 4 th : “A” Day Monday, Oct. 7 th : “B” Day Agenda  Homework Questions/Collect  Quiz review  Section 9.2 Mini-Quiz  Lab write-up: “Stoichiometry.

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Friday, Oct. 4 th : A Day Monday, Oct. 7 th : B Day Agenda Homework Questions/Collect Quiz review Section 9.2 Mini-Quiz Lab write-up: Stoichiometry and Gravimetric Analysis Concept Review work time Homework: finish lab write-up Lab next time Wear proper footwear!

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<p> Friday, Oct. 4 th : A Day Monday, Oct. 7 th : B Day Agenda Homework Questions/Collect Quiz review Section 9.2 Mini-Quiz Lab write-up: Stoichiometry and Gravimetric Analysis Concept Review work time Homework: finish lab write-up Lab next time Wear proper footwear! Homework Questions Sec. 9.2 review, pg. 319: #1-10 Practice Determine the limiting reactant and the percentage yield for the following: N H 2 2 NH g N 2 react with 3.15 g H 2 to give an actual yield of 14.5 g NH 3. N 2 is the limiting reactant. Theoretical yield = 17.0 g NH 3. Percentage yield = 85.3% Sec. 9.2 Mini-Quiz When you finish the quiz, hand it in, pick up the lab: Stoichiometry and Gravimetric Analysis and start reading it through Lab: Stoichiometry and Gravimetric Analysis Be sure to update your table of contents with this lab. Lab: Stoichiometry and Gravimetric Analysis In this lab, you will be reacting an unknown amount of sodium carbonate, Na 2 CO 3, with an excess of strontium chloride, SrCl 2, to produce aqueous sodium chloride, NaCl, and solid strontium carbonate, SrCO 3. You will use gravity filtration to separate the precipitate that forms. After washing the precipitate, the solid will be dried overnight in the drying oven. Lab: Stoichiometry and Gravimetric Analysis After the precipitate is dry, you will use stoichiometry to calculate: the moles of product formed the moles and mass of Na 2 CO 3 that must have been in the original solution the amount of Na 2 CO 3 in the 575 L vat on the factory floor Lab: Stoichiometry and Gravimetric Analysis Your lab partner for this lab will be Lab: Stoichiometry and Gravimetric Analysis Changes to Materials List and Procedure I made changes before copying the lab so you dont have to change anything Youre welcome! Lab Write-Up: Stoichiometry and Gravimetric Analysis You have the remaining time to work on the lab write-up. 1.Title 2.Purpose 3.Hypothesis 4.Materials 5.Procedure 6.Reflection Statement Concept Review Work Time If you finish the lab write-up, use the remaining time to work on the concept review: Ch. 9 Test/Concept Review due: Thursday, Oct. 17 th : Friday, Oct. 18 th Well be in the lab next time.be sure to wear proper attire!</p>