List the number of atoms of each element in the compounds below: a. Ca3(PO4)2
b. 2Mg(OH)2
c. 6NaCl
d. 2CO2

What does an electron configuration for an atom relate to the atoms placement on the periodic table

Sheela and her brother hari were sitting in the living room, watching tv. suddenly hari said that he thinks something is burning in the other room. how did he get the burning smell?

Sari is studying for different sample of materials. this table shows the mass and volume of the samples. which sample material(s) could be liquid