Carbon dioxide, co2, was shown to effuse through a porous plate at the rate of 0.030 mol/min. the same quantity of an unknown gas, 0.030 moles, is found to effuse through the same porous barrier in 95 seconds. calculate the molar mass of the unknown gas.

The molar mass of the unknown gas is 69.67 g/mol.

Explanation:

CO₂: 44 g/mol

1 mol CO₂ 44 g

0.03 mol CO₂₂  x

        x = 1.32 g CO₂

1.32 g of gas effuse through the plate every minute.

1.32 g gas 60s

     y           95 s

     y = 2.09 g gas

2.09 g gas ___ 0.030 mol

        z        ___  1 mol

            z = 69.67 g

The molar mass of the unknown gas is 69.67 g/mol.

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.