Look at this graph: What is the slope?
Simplify your answer and write it as a proper fraction, improper fraction, or integer.

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.

Iwould appreciate if someone could me.

What causes the appearance of lines in a emission spectrum