Combustion is an example of to energy conversion.

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.

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

Which substance is a steroid? cholesterol fatty acid monosaccharide trans fat