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This question was created from Lab 4 Which Alkali Metal Carbonate https://www.coursehero.com/file/21618554/Lab-4-Which-Alkali-Metal-Carbonate/

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#14 Homework Worksheet Empirical and Molecular Formula 1. Nicotine is a poisonous compound found in tobacco leaves. Analysis of nicotine shows that it contains 74.0% C, 8.65% H and 17.35% N. a. What is the empirical formula for nicotine? b. If the molecular weight of nicotine is 162 g/mol, what is the molecular formula for nicotine? 2. Mandelic acid is an organic acid with the following percent compostions: 63.15% C, 5.30% H and 31.55% O. a. What is the empirical formula for mandelic acid? b. If the molecular weight of mandelic acid is 152 g/mol, what is the molecular formula for mandelic acid? 3. The action of bacteria on meat and fish produces a poisonous compound called cadaverine that has a nasty odor. Analysis of cadaverine shows that it contains 58.77% C, 13.81% H and 27.40% N. a. What is the empirical formula for cadaverine? b. If the molecular weight of cadaverine is 102 g/mol, what is the molecular formula for cadaverine? 4. Cacodyl is a compound containing arsenic that has an intolerable garlic- like odor. Analysis of Cacodyl shows it contains 22.88% C, 5.76% H and 71.36% As. a. What is the empirical formula of Cacodyl? b. If the molecular weight of Cacodyl is 210 g/mol, what is the molecular formula for Cacodyl?

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Experiment 4
Experiment 4 Prelab Assignment
1. What basic physical law is applied in this experiment?
A student carried out the reaction below starting with 1.993 g of unknown (X2CO:), and
found that the mass loss due to CO2 was 0.593 g.
X2CO3(s) + 2 HCl(aq) - 2 XCl(aq) + H20(1) + CO2(g)

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Empirical formula: A formula showing the simplest possible ratio of atoms of elements in a
compound.
Molecular formula: A formula that expresses the number of atom of each type within one
molecule...

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