PLEASE HELP JUST PLS. I NEED HELP ON THIS ASAP. ITS DUE TOMORROW AT SCHOOL AT 8:30AM. I NEED THE WORK AND THE ANSWER I need the work and the answers. Pls :(((

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.

Acrystal that absorvd water from air is (blank)a. aqueousb. homogenousc. hygroscopicd. efflorescent

When a device is used in a circuit in which the voltage is 81 v the current flowing through the device is 3 a what is the resistance of the device