If 2.5 moles of sulfur dioxide are created, how many moles of oxygen are necessary?

Which compound contain an iron with a 3+ charge

How do you identify the anode on a power source such as a battery? how do you identify the cathode? how are terms anion and cation?

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.