Data 1. Mass of empty flask 31.38 2. Description of extracted caffeine: Include physical state (solid, liquid, gas) and color. liquid and the COlor is browN. 3. Mass of flask containing caffeine 81.42 6. Calculations and Conclusions 4. Mass of caffeine extracted 0.04 40 mg 40 5. Actual amount of caffeine in coffee sample The coffee was prepared by the stockroom manager. According to the recipe used, the coffee had a caffeine concentration of 1 mg/mL. Calculate the actual amount of caffeine in the coffee mg sample you used for the extraction. Show work here:

Data 1. Mass of empty flask 31.38 2. Description of extracted caffeine: Include physical state (solid, liquid, gas) and color. liquid and the COlor is browN. 3. Mass of flask containing caffeine 81.42 6. Calculations and Conclusions 4. Mass of caffeine extracted 0.04 40 mg 40 5. Actual amount of caffeine in coffee sample The coffee was prepared by the stockroom manager. According to the recipe used, the coffee had a caffeine concentration of 1 mg/mL. Calculate the actual amount of caffeine in the coffee mg sample you used for the extraction. Show work here:

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter13: The Chemistry Of Solutes And Solutions

Section13.7: Colligative Properties Of Solutions

Problem 13.16E: Suppose that you are closing a cabin in the north woods for the winter and you do not want the water...

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A student conducts an experiment using an unknown hydrate and obtains the following data Crucible 24.31g Crucible + hydrate 29.31g Crucible + anhydrate 28.26g Further experimentation demonstrates the anhydrate is composed of 29.44% magnesium, 23.55% sulfur and 47.01% oxygen by mass. A. Determine the mass of hydrate, anhydrate and water found in the sample. B. Determine the emperical formula for the anhydrate. C. Determine the formula for the hydrate.
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taprect number of significant figures. A. Precipitation of CaC,O4H,O from the Calculation Zone Salt Mixture mil o 3. Mass of salt mixture (g) Data Analysis, 1. 0.879 4. Mass of filter paper (g) 1.896 5. Mass of filter paper and CaC,O4•H2O (g) рaper 2.180 6. Mass of air-dried CaC,O4•H,O (g) B. Determination of Limiting Reactant Data Analysis, 3. 1. Limiting reactant in salt mixture CaCl, 2H,O 2. Excess reactant in salt mixture Data Analysis e cxbcipuu 1. Moles of CaC,O,'H,O precipitated (mol) Data Analysis, 4. Show calculation. 2. Moles of limiting reactant in salt mixture (mol) 20 See equation 8.1. 3. Mass of limiting reactant in salt mixture (g) Show calculation. trotanjl Data Analysis, 5. 4. Mass of excess reactant in salt mixture (g) Equals mass of salt mixture minus mass of limiting reactant. Show calculation. 5. Percent limiting reactant in salt mixture (%) Show calculation. 6. Percent excess reactant in salt mixture (%) rtc beccib For Trials 2 and 3, the percent CaCl,-2H,O in the…
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