One step in making para-aminobenzoic acid, paba, an ingredient in some
suntan lotions, involves replacing one of the hydrogen atoms in a toluene molecule with
an -no2 group, directly opposite the -ch3 group. calculate the percent yield if 550 g of
toluene added to an excess of nitric acid provides 305 g of the nitrotoluene product.

What is the empirical formula for c4h8o2

The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.

Select all the correct answers.which compounds have the empirical formula ch20? (multiple answers)a.c2h4o2b.c3h603c.ch2o2d.c5h1005e.c6h1206