If it takes 65 seconds for 25 cm3 of helium gas toeffuse


If it takes 6.5 seconds for 25 cm3 of helium gas toeffuse through a pinhole into a vacuum, how long would it take for25 cm3 of CH4 to escape under the sameconditions?

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Chemistry: If it takes 65 seconds for 25 cm3 of helium gas toeffuse
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