1. Which of the following can you separate physically? a. carbon dioxide
b. seawater
C. ammonia
d. gold

Which material burns faster? metal aluminum

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.

What is the mass of 0.750 mole of aluminum oxide, al2o3?