When the temperature of a hollow sphere with 685 L (volume) of helium gas is held at 621 K (temp), the pressure of the gas is 18
90 kPa. How many moles of the helium does the sphere contain?
1 answer:
Answer:
250.88moles
Explanation:
From the question given, the following data were obtained:
V = 685 L
T = 621 K
P = 1890 kPa = 1890000Pa
Recall 101325Pa = 1atm
1890000Pa = 1890000/101325 = 18.65atm
R = 0.082atm.L/mol /K
n =?
PV = nRT
n = PV /RT
n = (18.65 x 685)/ (0.082x621)
n = 250.88moles
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