Lead (II) chromate, PbCrO4, was used as a pigment in paints. How many atoms of oxygen are present in 75 g of lead (11) chromate?

catya your not at all which answer i've seen you do this on another question!

the answer is a! (2.9 x 10^-18 j) hope i could someone. : )

50.23 i believe is correct but don't quote me on that.

intermolecular forces are the forces between molecules or particles.

there are two kinds of van der waals forces: weak london dispersion forces and stronger dipole-dipole forces.

in molecule of water there are dipole-dipole forces between negatively charged oxygen from one molecule of water and positively charger hydrogen of another molecule of water.

hydrogen bond is an electrostatic attraction between two polar groups that occurs when a hydrogen atom (h), covalently bound to a highly electronegative atom such as flourine (f), oxygen (o) and nitrogen (n) atoms.