Suppose you have made 1L worth of a mixture of methanol and water, by mixing 3 parts of methanol and 2 parts of water by mass. Assume for simplicity that the volume of the mixture is exactly equal to the sum of the volumes of the ingredients (which is not true, by the way). What is the mass concentration of oxygen in the mixture? (Note that the vast majority of oxygen is bound to other atoms.) Give answer in g/L, 2 significant digits, do not write down the units.