1. Molar volume calculations
6/16/2018
Molar volume calculations

2. Molar volume calculations
6/16/2018
Molar volume calculations
a) Mass = g/cm x cm = g/cm x 3.00 cm
= g
b) Moles = g x mol/g= g x 1 mol/24.31 g
= mol
c) Moles H2 = Moles Mg = mol
( should be higher # than g)
d) Class average = 44.1 mL
e) kPa, f) 22°C, 295 K
g) 2.64 kPa (partial pressure of water)
h) Pgas = Patm - Pvapour = (e – g)
101.6 kPa kPa = kPa

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6/16/2018
V1 = 44.1 mL, P1 = kPa, T1 = 295 K
V2 = ?, P2 = kPa, T2 = 273 K
P1V1 T1 =
P2V2 T2
(98.96 kPa)(44.1 mL)
(295 K) =
( kPa)(V2)
(273 K)
(98.96 kPa)(44.1 mL)(273 K)
(295 K)( kPa) V2 = =
39.86 mL
n) mol = mL, 1 mol = mL
(divide each side by or cross multiply)
o) – 22.4 (observed – expected / expected ) x %
% error = ( ) / 22.4 x 100%
= 0.19/22.4 x 100% = 0.85 %
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