How many atoms of gold are in 10 grams of gold?

What volume would 2.25 moles of ne has occupy at stp?

What four properties do all waves have in common

Acertain atom has 22 protons and 19 electrons. this atom loses an electron. the net charge on the atom is now 4+1+01-4-. if this same atom with 22 protons and 19 electrons were to gain 3 electrons, the net charge on the atom would be 3+2+02-3-.