A student has 300. mL of 0.250 M Na2SO4(aq) and is asked to make 100. mL of 0.100 M Na2SO4(aq) for an experiment. Calculate the volume of 0.350 M Na2SO4(aq) required to make the 100. mL solution. Show your work

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.

Consider this initial-rate data at a certain temperature for the reaction described by

Connect the whole numbers on the periodic table to indicate what they represent?