WARM-UP 12/6/13 Homework (Pg. 361 #13&14) out on your table please! 1. How many moles are in 5.00 g of CaC2? 2. Based on the balanced equation below,

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Presentation transcript:

WARM-UP 12/6/13 **Homework (Pg. 361 #13&14) out on your table please!** 1. How many moles are in 5.00 g of CaC2? 2. Based on the balanced equation below, how many moles of C2H2 can be made from the answer to #1? CaC2 + 2H2O  C2H2 + Ca(OH)2 3. How many grams are in the answer to #2?

12/5/13 Objective 12/5/13 Agenda Solve stoichiometry problems Review Warm-Up Review Homework Stoichiometry Practice Finals Review

Rest of the Semester Monday Tuesday Wednesday Thursday Friday 2 Balancing Equations 3 Review Conversions 4 Mole Ratio 5 Complete Stoichiometry 6 Get Final Review 9 Extra Credit Project due Review Test 1 Material 10 Review Test 2 Material 11 Review Stoichiometry Intro to Cookie Lab 12 Cookie Lab Final Review 13 Debrief Lab Holiday Party? 16 Final Final Review 17 Finals (1 & 4) 18 Finals (2 & 5) 19 Finals (3 & 7) 20 Finals (6 & 8)

WARM-UP 12/6/13 1. How many moles are in 5.00 g of CaC2? = x = x 0.078 mol CaC2

WARM-UP 12/5/13 2. Based on the balanced equation below, how many moles of C2H2 can be made from the answer to #1? CaC2 + 2H2O  C2H2 + Ca(OH)2 x = 0.078 mol C2H2

WARM-UP 12/5/13 3. How many grams are in the answer to #2? x = x = 2.03 g C2H2

Putting it all together: Stoichiometry Calculating the mass of one substance from the mass of another substance. mass A  moles A  moles B  mass B molar mass moles A  moles B mole ratio moles B  mass B molar mass

Let’s do a problem together Calculate the number of grams of NH3 that can be produced by 5.40g of hydrogen. N2 + 3H2  2NH3 mass A  moles A  moles B  mass B molar mass mole ratio molar mass x x x =

Do problem #1 on the Stoichiometry worksheet. Your turn! Do problem #1 on the Stoichiometry worksheet. Explain to a neighbor how you did it. We’ll share as a class.

Announcement about Finals By the end of Monday (12/9/13), those with A’s in chemistry can choose not to take the final exam. If you’re close to an A, you might still get there by doing the extra credit mole project. Must still come during finals for an alternative assessment.

Section 1 of Final Review Tutoring Today! 5th – Ms. Au-Yeung – Rm. 402 12/6/13 Homework Section 1 of Final Review