What is the mole fraction of potassium hydroxide, KOH, in a solution prepared from 56g of potassium hydroxide and 700.0g of water

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

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.

50 points! need answer asap. what type of organic compound contains the following functional group? (2 points)