Coal is transported from mine to plant via “unit trains” that usually consist of 100 cars each carrying 100 tons of coal. if one car carries exactly 80 tons of carbon (in the form of coal), calculate the number of kg-moles of carbon in the car. the atomic mass number of carbon is 12

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.