Identify the average atomic mass and the element with these isotopes: 98.9% atomic mass 12 and 1.1% atomic mass 13.

What term is missing from the central region that describes hypotheses, theories, and laws? popular predictable mathematical falsifiable

Which is true of a liquid? it has a definite volume but not a definite mass.it has a definite mass but not a definite volume.it has a definite volume but not a definite shape.it has a definite shape but not a definite volume.

Reduction is a reaction which results in a in electrons and a in positive charge of the atom or ion 1) a- loss 1) b- gain 2) a-increase 2) b-decrease