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 0.1274 g Mass of gelatin capsule and alloy sample 0.3185 g Mass of alloy sample, m Mass of empty beaker Mass of beaker and displaced water Mass of displaced water Volume of displaced water (density 1.00 g/mL) Volume, V, of H, Volume of displaced water- Find the number of moles of H₂ evolved, H₂ P, XV RT where: Tilly == NH₂ . . V is in liters. PH₂ is in atm. . T is in Kelvin. • R = 0.0821 liter-atm/mole-K moles H₂ 147.9 g 400.2 g N₂ 1611₂ m nH₂ Find, NH₂ the number of moles of H; per gram of sample. moles H₂/9 9 9 Ambient temperature. t Ambient temperature. T Atmospheric pressure Vapor pressure of H₂O at t Pressure of dry H₂ P, Patmospheric - Vapor Pressure, mL Pressure of dry H, L 25.0 °C K 739 mm Hg 23.8 mm Hg mm Hg atm

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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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
0.1274 g
Mass of gelatin capsule and alloy sample 0.3185 g
Mass of alloy sample, m
Mass of empty beaker
Mass of beaker and displaced water.
Mass of displaced water
Volume of displaced water
(density=1.00 g/mL)
Volume, V, of H, Volume of displaced water-
Find the number of moles of H₂ evolved, H₂
P₂ x V
RT
where:
=
THE ==
NH₂
. V is in liters.
PH₂ is in atm.
.
. Tis in Kelvin.
• R = 0.0821 liter-atm/mole-K
moles H₂
N₂
nH₂
Find, NH₂ the number of moles of H₂ per gram of sample.
7616₂
147.9 g
400.2 g
Submit Answer
moles H₂/9
Try Another Version
9
9
Ambient temperature. t
Ambient temperature. T
Atmospheric pressure
Vapor pressure of H₂O at t
Pressure of dry H₂1
PH, Patmospheric - Vapor Pressure,o
mL Pressure of dry H₂
L
5 Item attempts remaining
25.0 °C
K
739 mm Hg
23.8 mm Hg
mm Hg
atm
Transcribed Image Text: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 0.1274 g Mass of gelatin capsule and alloy sample 0.3185 g Mass of alloy sample, m Mass of empty beaker Mass of beaker and displaced water. Mass of displaced water Volume of displaced water (density=1.00 g/mL) Volume, V, of H, Volume of displaced water- Find the number of moles of H₂ evolved, H₂ P₂ x V RT where: = THE == NH₂ . V is in liters. PH₂ is in atm. . . Tis in Kelvin. • R = 0.0821 liter-atm/mole-K moles H₂ N₂ nH₂ Find, NH₂ the number of moles of H₂ per gram of sample. 7616₂ 147.9 g 400.2 g Submit Answer moles H₂/9 Try Another Version 9 9 Ambient temperature. t Ambient temperature. T Atmospheric pressure Vapor pressure of H₂O at t Pressure of dry H₂1 PH, Patmospheric - Vapor Pressure,o mL Pressure of dry H₂ L 5 Item attempts remaining 25.0 °C K 739 mm Hg 23.8 mm Hg mm Hg atm
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