How many grams of a 31.6% potassium sulfate solution would contain 617 g potassium sulfate?

What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?

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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.