Question

The only thing I don't understand is where the .67 is coming from when trying to find the amount of Ne leaving. This has already been answered but can someone please tell me where .67 is from??

Two porous containers are filled with hydrogen and neon respectively. Under identical conditions, 2/3 of the hydrogen escapes in 6 hours. How long will it take for half the neon to escape?

Question 1: Solution
rate1 = H2 = x rate2 = Ne = 1.
The weight of H2 = 2.02 Ne = 20.18.

By Graham's Law,
x / 1 = square root (20.18 / 2.02) = 3.16 times as fast.

0.67 / 3.16 = 0.211 amount of Ne leaving in 6 hours.
Therefore 0.211 / 6 = 0.50 / x. x = 14.2 hours

Answer 1

Answer:

by Graham's law it was so simple