The freezing point of 53.70 g of a pure solvent is measured to be 48.55 ºc. when 2.07 g of an unknown solute (assume the van 't hoff factor = 1.) is added to the solvent the freezing point is measured to be 46.24 ºc. if the freezing point depression constant of the pure solvent is 7.17 ºc·kg solvent/mol solute calculate the molar mass of the solute.

What problem would a person have if the nucleic acid in one of his or her cells were damaged?

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.

Quickly what are the following of organisms that existed over a wide area but only for a limited time period called a.soft fossils b.mold fossils c.index fossils d.trace fossils