Help Pls!

1- MgO = ____ atoms
2- Rb2S = ____ atoms
3- Ca(OH)2 = ____ atoms
4- K2SO4 = ____ atoms
5- Ga2(CO3)2 = ____ atoms​

Help Pls1 MgO atoms2 Rb2S atoms3 CaOH2 atoms4 K2SO4 atoms5 Ga2CO32 atoms class=