Question

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 percent of N, P₂O₅ and K₂O in that order. What is N: P: K ratio of a 30: 10: 10 fertilizer in terms of moles of each element expressed as x: y: 1.0?

(N = 14, P = 31, K = 39)