chemistry
posted by michael .
At a particular pressure and temperature, it takes just 2.040 min for a 3.632 L sample of F2 to effuse through a porous membrane. How long would it take for the same volume of UF4 to effuse under the same conditions

rate F2 = 3.632L/2.040 min = ?
(?/rate UF4) = sqrt(molar mass UF4/2*19)
Solve for rate UF4 gas, then
rate = 3.632 L/min.
You have rate and L, solve for min.
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