Calculate the theoretical number of moles of hydrogen gas produced in trails 1 and 2

D. most models represent a real world object in a simpler way

It was ernest rutherford

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.