2.18 x 10^6 ng = 2.18 x 10^? mg

How many mmols of tris-hcl are there in 100 ml of a 100 mm tris-hcl buffer solution at ph 8.1? note that the 100 mm refers to the sum of tris and tris-hcl concentrations?

Which of the following describes a situation where competition between producers exists

Which statement accurately represents the arrangement of electrons in bohr’s atomic model?