Phids are eaten by blackbirds. Peach trees are eaten by aphids. The blackbirds are eaten by kestrels. The farmer sprays her peach trees with DDT. Which species will have the greatest concentration of DDT?Immersive Reader

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’s the percent by mass of carbon in c10h14n2

Which of the following is true for the actual yield of a reaction? it is always calculated as a ratio. it is the yield from the excess reactant. it is the yield from the limiting reactant. it is always less than the theoretical yield.