J.R. S. answered 05/08/23
Ph.D. University Professor with 10+ years Tutoring Experience
Ideal gas law: PV = nRT
P = pressure = 398 torr x 1 atm / 760 torr = 0.5237 atm
V = volume in liters = 4.99 L
n = moles = 3.32 g Ne x 1 mol Ne / 20.18 g = 0.1645 moles
R = gas constant = 0.0821 Latm/Kmol
T = temperature in Kelvin = ?
Solve for T:
T = PV / nR
Plug in the values and solve