What mass of helium, in grams, is required to fill a 3.5-L balloon to a pressure of 1.1 atm at 25 °C?
Mass = g
chem help?
2016-06-22 8:42 pm
回答 (1)
2016-06-22 8:49 pm
Helium gas :
Pressure, P = 1.1 atm
Volume, V = 3.5 L
mass, m = ? g
Molar mass, M = 4.003 g/mol
Gas constant, R = 0.0821 atm L / (mol K)
Absolute temperature, T = (273 + 25) = 298 K
PV = nRT
PV = (m/M)RT
m = PVM/RT
Mass, m = 1.1 × 3.5 × 4.003 / (0.0821 × 298) g = 0.63 g
Pressure, P = 1.1 atm
Volume, V = 3.5 L
mass, m = ? g
Molar mass, M = 4.003 g/mol
Gas constant, R = 0.0821 atm L / (mol K)
Absolute temperature, T = (273 + 25) = 298 K
PV = nRT
PV = (m/M)RT
m = PVM/RT
Mass, m = 1.1 × 3.5 × 4.003 / (0.0821 × 298) g = 0.63 g
收錄日期: 2021-04-18 15:15:34
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