2. A student obtained the following data in this experiment. Fill in the blanks

Question

2. 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: 0.1 168 g
Mass of capsule plus alloy sample 0.2754 g
Mass of alloy sample, _______g
Temperature, t 21 C
Temperature, T ______K
Barometric pressure 746 mm Hg
Vapor pressure of H2O at t (CRC) ________mm Hg
Pressure of dry H2, PH2 (Eq. 7) ________mm Hg
________atm
Mass of empty beaker: 141.23 g
Mass of beaker plus displaced water: 307.75 g
Mass of displaced water : ________ g
Volume of displaced water(density = 1.00 g/mL) ________mL
Volume, V, of H2 = Volume of displaced water ________mL; _____

Explanation / Answer

Mass of alloy sample, _0.1586_g (mass of capsule plus alloy - mass of capsule = 0.2754 -0.1168)

Temperature, T _294.15_K (21oC + 273.13 = temp in K)

Vapor pressure of H2O at t (CRC) ___18.89__mm Hg ( P = exp (20.386 -(5132/T)) , where T in K)

Please provide the equation of H2 pressure.

Mass of displaced water : ___166.52__ g (mass of beaker plus water - mass of beaker = 307.75 - 141.23)

Volume of displaced water(density = 1.00 g/mL) __166.52___mL ( volume = mass/ density)

Volume, V, of H2 = Volume of displaced water _166.52__mL

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