Under identical conditions, separate samples of O2 and an unknown gas were allowed to effuse through identical membranes simulta
neously. After a certain amount of time, it was found that 8.44 mL of O2 had passed through the membrane, but only 3.95 mL of of the unknown gas had passed through. What is the molar mass of the unknown gas?
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The average atomic mass of the imaginary element : 47.255 amu
<h3>Further explanation </h3>The elements in nature have several types of isotopes
Isotopes are elements that have the same Atomic Number (Proton)
Atomic mass is the average atomic mass of all its isotopes
Mass atom X = mass isotope 1 . % + mass isotope 2.% ..
isotope E-47 47.011 amu, 87.34%
isotope E-48 48.008 amu, 6.895
isotope E-49 50.009 amu, 5.77%
The average atomic mass :