Unit 2 Study Guide
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This 6 page Study Guide was uploaded by Kara Nichols on Friday June 17, 2016. The Study Guide belongs to CHM 111 at Calhoun Community College taught by Mona Chaudhary in Spring 2016. Since its upload, it has received 43 views.
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Date Created: 06/17/16
Unit 2 Study Guide 1. How many moles are in 37.6 g of HCl? 22 2. What is the weight, in grams, of 3.7 x 10 molecules H O?2 3. How many molecules are in 89 moles of Fe O ? 2 3 4. Calculate the percent by mass of carbon in C H O : 6 12 6 5. Find the empirical and molecular formula of a compound that is 28.6% magnesium, 14.3% carbon, and 57.1% oxygen, and has a molecular weight of 337.28g. 6. What is the empirical formula of glucose? (C H O ) 6 12 6 7. Balance the chemical equations: a. P 4 O 2 O 4 10 b. Na + H O 2 NaOH + H 2 c. NH 4O 2 + H O2 2 8. Given the unbalanced reaction: L3 N + H 2 NH 3 LiOH a.How many grams of LiOH can (theoretically) be produced when .38 grams of lithium nitride reacts with water? b.What is the limiting reactant?______________________________ c. How many grams of the excess reactant will be used?________________________ d.If the reaction actually produces .67 grams of lithium hydroxide, what is the percent yield?
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