Asample of rock from california contains 1.116g of iron and 0.48 g of oxygen.
determine the percent composition of both element in the sample.

V1t2 = v2t1 is an expression of who’s law

Which of the following would be an accurate picture of the earth during the summer time of the northern hemisphere?

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.