Chemistry, 06.05.2020 06:10 gavincoscarat760
A student obtained the following data in this experiment. Fill in the blanks in the data and make the indicated calculations
Mass of gelatin capsule 0.1284 g Ambient temperature, t 22°C
Mass of capsule plus alloy sample 0.3432 g Ambient temperature, T K
Mass of alloy sample, m 0.2148 g Barometric pressure 745 mm Hg Mass of empty beaker 144.5 g Vapor pressure of H2O at t mm Hg
Mass of beaker plus displaced water 368.9 g Pressure of dry H2, 745 mm Hg Pressure of dry H2 atm
Mass of displaced water 224.4 g Volume of displaced water (density = 1.00 g/mL) mL Volume, V, of H2 = Volume of displaced water mL; liters
Find the number of moles of H2 evolved, (V in liters, P in atm, T in K, R = 0.0821 literatm/ mole K). moles H2
Find , the number of moles of H2 per gram of sample.
Answers: 3
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