Per stirpes receive one-third (all of "D"s one-third share). Under "per capita", the two-thirds remaining after "C" 's one-third share was taken would be divided equally among all three children of "B" and "D". (Two-thirds = six ninths) Each would receive two-ninths: "B1", "B2", and "D1" would all receive two-ninths. "Notes:" In many U.S. states, such as New York, a statute has modified the "per stirpes" approach and utilizes instead a per capita with representation approach (also known as modern American per stirpes). Under the per capita with representation approach, the number of branches is determined by reference to the generation nearest
Parts-per notation µg/m is roughly equivalent to parts-per-trillion whereas in air, it is roughly equivalent to parts-per-billion. Note also, that in the case of air, this convention is much less accurate. Whereas one liter of water is almost exactly 1 kg, one cubic meter of air is often taken as 1.143 kg—much less accurate, but still close enough for many practical uses. Parts-per notation In science and engineering, the parts-per notation is a set of pseudo-units to describe small values of miscellaneous dimensionless quantities, e.g. mole fraction or mass fraction. Since these fractions are quantity-per-quantity measures, they are pure numbers with no