Make the following conversions: 9. How many formula units are in 0.75 moles of a substance?
10. What is the mass in grams of 6.25 moles of copper (II) nitrate?
11. How many grams are there in 1.5 x 1025 molecules of CO?
12. How many atoms are in 117.3 grarıs of potassium?

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.