How many barium atoms are in the compound 3BaCl2?
A)5
B)6
C)3
D)2

What is the formula that this ionic compounds could form sr2+p3-o2-

What is the mass of sodium in 3 moles of sodium chloride

Need ! asap will mark 10 pts using the room temperature line (orange line) and your periodic table, make lists that identify the state of matter (gas, liquid, or solid) in which each element you plotted exists at room temperature. explain your answers