A large tank is fi lled with methane gas at a
Chapter , Problem 49(choose chapter or problem)
A large tank is fi lled with methane gas at a concentration of 0.650 kg/m3 . The valve of a 1.50-m pipe connecting the tank to the atmosphere is inadvertently left open for twelve hours. During this time, 9.00 3 1024 kg of methane diff uses out of the tank, leaving the concentration of methane in the tank essentially unchanged. The diff usion constant for methane in air is 2.10 3 1025 m2 /s. What is the cross-sectional area of the pipe? Assume that the concentration of methane in the atmosphere is zero.
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