It takes 166 min for a 100-ml sample of an unknown gas to
It takes 16.6 min for a 10.0-mL sample of an unknown gas to effuse through a pinhole. A 10.0-mL sample of helium, He, required 5.00 min. What is the molecular weight of the unknown gas?
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suppose a single electron orbits about a nucleus containing two protons 2e as would be the case for a helium atom from
it takes 166 min for a 100-ml sample of an unknown gas to effuse through a pinhole a 100-ml sample of helium he
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