A compound contains only C, H, and N. Combustion of a 40.28 g sample of the compound produces 38.46 g of carbon dioxide, 47.25 g of water, and some nitrogen gas. A separate experiment determines the molecular mass of the compound to be 138.3 g/mol. Determine the empirical formula and molecular formula for the compound.

Van der waals forces are temporary electromagnetic forces established between uncharged atoms. some neutral molecules, when close together, can become temporarily “charged,” as electrons move around the atom. water is a polar molecule, the side of the molecule that the hydrogens bond to being more positive, and the opposite side bound to the lone pairs of electrons being more negative. this means that it participates in dipole-dipole interaction (non-polar exhibits dispersion forces), and it has the capacity for hydrogen bonding.

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