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## Week 6 Notes (2/23)

by: Kelly Johnson

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# Week 6 Notes (2/23) Chem 107

Kelly Johnson
WCUPA
GPA 3.63
General Chemistry for Health Science
Jacqueline Butler

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This covers only Tuesdays notes, as Thursday was a review session.
COURSE
General Chemistry for Health Science
PROF.
Jacqueline Butler
TYPE
Class Notes
PAGES
0
WORDS
CONCEPTS
Chemistry
KARMA
25 ?

## Popular in Chemistry

This 0 page Class Notes was uploaded by Kelly Johnson on Saturday February 27, 2016. The Class Notes belongs to Chem 107 at West Chester University of Pennsylvania taught by Jacqueline Butler in Winter 2016. Since its upload, it has received 31 views. For similar materials see General Chemistry for Health Science in Chemistry at West Chester University of Pennsylvania.

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Date Created: 02/27/16
Unit 2 Chapter 4 Continued 1 Stoichiometry a Steps i Balance your equation 1 Make sure that all rules discussed before are followed Equal molar amounts of each element on both sides ii Convert everything to moles 1 If you have the mass of a substance use molar mass conversion factors to turn it into moles This will make it easier to convert lf moles are already given leave them in this form iii Use a molar ratio 1 This can be found by using the balanced equation Make a conversion factor out of the moles of the substances you need iv Convert to desired unit 1 Your number at this point should be in moles If the answer should be in grams use the molar mass of that substance as a conversion factor to complete the problem b Moles to Moles i Moles A l Molar Ratio conversion factor l Moles B c Mass to mass i Mass A l Moles A l Molar ratio conversion factor l Moles B l Mass B d Examples were completed in class and lam available to help review these if need be 2 Limiting Reactants a The limiting reactant is the reactant that will run out rst This will the control how much can be produced in each reaction 3 Theoretical Yields a De nition i The nal amount of product that can be made if nothing is lost throughout the reaction ii No reaction can produce more than the theoretical yield b To determine the yield you follow this equation Actual yield i39 Theoretical Yield X 100 1 Actual yield is what you can measure in a lab 2 Theoretical yield is what is calculated

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