What are the units of k in the following rate law? rate = k[x][y]m/s1/mss/m^2m/sm^2/s

Nitrogen (n), phosphorus (p), and potassium (k) are the main nutrients in plant fertilizers. according to an industry convention, the numbers on the label refer to the mass percents of n, p2o5, and k2o, in that order. calculate the n: p: k ratio of a 30: 10: 10 fertilizer in terms of moles of each element, and express it as x: y: 1.0.

Compare and contrast physical changes with chemical changes.

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?