The newly discovered element Xyyyillium (Xy) has two isotopes: Xy–253 (253.0) amu) and Xy–255 (255.0 amu). Given that the average atomic mass of Xy is 254.8 amu, what is the percent abundance
of each isotope? Justify your answer.

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.

frequency, z, and the collision density, z, in carbon dioxide (co2), r 180 pm at 30 °c and 120 kpa