How to calculate the equilibrium of 4 substancea

Compare and contrast physical changes with chemical changes.

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?

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.