first used the term cell when he used a (5) to observe box-like structures when he was examining cork under a microscope. (6) also saw what we know know as (7) when looking at pond water. These observations, along with the observations of several other scientists over the course of 200 years, lead to the development of the (8).

Which statements describe polyatomic ions? check all that apply. polyatomic ions have many charges. polyatomic ions have one overall charge. polyatomic ions repel other ions to form ionic bonds. polyatomic ions attract other ions to form ionic bonds. polyatomic ions are made up of only one type of atom. polyatomic ions are made up of two or more types of atoms.

Determine the energy released per kilogram of fuel used. given mev per reaction, calculate energy in joules per kilogram of reactants. consider 1 mole of tritium plus 1 mole of deuterium to be a mole of “reactions” (total molar mass = 5 grams).

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?