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2.20.15 Pick up turned back papers. Pick up sock and board. Do Now
Follow the link or qr to warmup – you have – you have until 5 minutes after the bell
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Today is February 20, 2015 Topic: The Mole Lesson Objectives: SWBAT
2.2.4 Analyze Stoichiometric relatioships inherent in a chemical reaction 2.2.5 Analyze quantitatively the composition of a substance (empirical formula, molecular formula, percent composition, and hydrates) Essential Question: 2.2 Analyze chemical reactions in terms of quantities, product formation, and energy.
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Homework 2-20 Find HW on google classroom
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IMPORTANT DATES Monday 2/23 – Quiz Tuesday 2/24 – Tutoring 2:30-3:30 Wednesday 2/25 – Chemical Reaction Retest Thursday 2/26 – Tutoring 2:30-3:30 Friday 2/27 – Lab/ Quiz
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Agenda 2-20 Do Now Google Classroom recap Mole Conversions Review
Mole Conversions foldable Puzzle Wrap Up
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Google Classroom you MUST USE YOUR GAGGLE EMAIL ONLY !!
Go to the GOOGLE login page Use the following username and password: Username: firstinitial + last name + last four of student Password: Birthday YYMMDD Then in that google page search Google Classroom, click the first link.
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Google Classroom you MUST USE YOUR GAGGLE EMAIL ONLY!!
If you have not joined the class join by selecting that you are a student. Then click the plus sign in the upper right hand corner to enter a code. Codes: 1st block – klcajn 2nd block – ot0ok37 4th block – 5m3uvc
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TOTD 2/19
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Review of Formula Mass
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Review of Gram – Moles and Moles – gram
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Calculations with Moles: Using Avogadro’s Number
How many atoms of lithium are in 3.50 moles of lithium? 3.50 mol 6.02 x 1023 atoms = atoms 2.07 x 1024 1 mol
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Calculations with Moles: Using Avogadro’s Number
How many atoms of lithium are in 18.2 g of lithium? 18.2 g Li 1 mol Li 6.022 x 1023 atoms Li 6.94 g Li 1 mol Li (18.2)(6.022 x 1023)/6.94 = atoms Li 1.58 x 1024
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M.4.2.1
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M How many grams are in 1.505x10^23 molecules of NaCl ?
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4 How many atoms are in 21 grams of Lithium?
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2 How many grams are in x 10^24 atoms of water ?
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1 How many molecules are in 66 grams of Aluminum Chloride ? (remember to find the charges and criss cross when writing formula!)
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Puzzle Wrap Up
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