Afluorine ion has 9 protons and a charge of negative one how many electrons are in an ion of fluorine

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion

Predict whether the changes in enthalpy, entropy, and free energy will be positive or negative for the boiling of water, and explain your predictions. how does temperature affect the spontaneity of this process?