What volume of #O_2# gas (in L), measured at 781 mmHg and 34 degrees C, is required to completely react with 53.1 g of Al?
Again, a mercury column has been used to measure a pressure over one atmosphere. This is not something that should be attempted. I get a volume of approx.
We need a stoichiometrically balanced equation:
Thus, we need
And now, we simply use the Ideal Gas Equation, to get a volume equivalent to this molar quantity:
What mass of
Again, I stress the unreality of measurements of