200cm3 of oxygen gas take 250seconds to diffuse through a porous plug. Under similar conditions, an equal volume of an unknown gas take 277 seconds to diffuse through the same porous plug. Calculate the relative molecular mass of the unknown gas.
250/279 = â(32/mx)250 x Jmx = 277 x â32âmx= (277 x 532)/250Mx = ((277 x â32)/250)Mx = 39.29
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