J.R. S. answered • 07/05/22
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Ideal gas law: PV = nRT
P = pressure in atm =777 torr x 1 atm / 760 torr = 1.022 atm
V = volume in L = 21.6 L
n = moles = ?
R = gas constant = 0.0821 Latm/Kmol
T = temp in K = 20.6C + 273 = 293.6K
Solving for n ...
n = PV/RT
n = (1.022)(21.6) / (0.0821)(293.6)
n = 0.916 moles
J.R. S.
tutor
If I use 293.75 K as the temperature (20.6ºC + 273.15), then I get an answer of 0.91534 moles = 0.915 moles. That's the only possible difference I can find. Try that.
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07/06/22
Lana K.
I also got 0.9158101206 or 0.916 moles when I calculated it using the ideal gas law but the answer is incorrect. What could have been done wrong?07/06/22