How many moles of silver atoms are in 3.88x10^20 atoms of silver

What is the number of neutrons in an atom with atomic mass of 35

What is the chemical formula for dihydrogen monoxide

K12 chemistry unit assessment: chemical bonding, electrostatic forces in ionic bonds hold which of the following together? 1. he atoms in helium gas 2.na+ and br- in nabr 3. fe atoms and localized electrons in iron