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A gas made up of atoms escapes through a pinhole 0.392 times as fast as Ne gas. Write the chemical formula of the gas.
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Answer: The chemical formula of the gas is Xenon.
Explanation:
From Graham’s law of effusion rates, the rate of effusion of a gas is inversely proportional to the square root of its molar mass.
Given: Rate of unknown gas =
Putting the values in the formula:
Squaring both sides:
As Xenon (Xe) has molar mass of 131g/mol, Thus the chemical formula of the gas is Xenon.