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17 Nov 2019
Chemistry 1215 Experiment 5: Determination of Avogadroâs Number, Pre-lab Name ____________________________________________ 1. How many moles of stearic acid are contained in 0.25 mL of a hexane solution containing 5.4 X 10-4 g stearic acid/L? 2. How many nm2 are there in 20.0 cm2 ? 3. Calculate the surface area in nm2 of a water solution contained in a Petri Dish with a diameter of 9.0 cm. The area of a circle is calculated as A = Ïr 2 . 4. If a molecule of stearic acid covers an area of 0.21 nm2 , how many stearic acid molecules will it take to cover the surface of the Petri dish in question 3?
Chemistry 1215 Experiment 5: Determination of Avogadroâs Number, Pre-lab Name ____________________________________________ 1. How many moles of stearic acid are contained in 0.25 mL of a hexane solution containing 5.4 X 10-4 g stearic acid/L? 2. How many nm2 are there in 20.0 cm2 ? 3. Calculate the surface area in nm2 of a water solution contained in a Petri Dish with a diameter of 9.0 cm. The area of a circle is calculated as A = Ïr 2 . 4. If a molecule of stearic acid covers an area of 0.21 nm2 , how many stearic acid molecules will it take to cover the surface of the Petri dish in question 3?
Trinidad TremblayLv2
10 Mar 2019
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