Agas with a volume of 5.0 l at a pressure of 215 kpa is allowed to expand to a volume of 14.0 l. what is the pressure in the container if the temperature remains constant?

Iam in desperate need of with this !

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.

What is the solubility of substance?