When dissolving a crude compound to be recrystallized, which of the following is true? a. as long as the solvent is hot, excess solvent can be added
b. the crude should be added to the solvent such that you have 5.0 ml of solvent for 5 grams of crude.
c. the solvent must be cold and the minimum amount of solvent must be used.
d. the solvent should be added to the crude

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.