A train travels 478 km along a straight stretch. If the train is displaced south by 213 km, what is the train's displacement to the west? Find the displacement direction 0.

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

Use vsepr theory to predict the molecular geometry of the molecule hcn.

Two models of the same compound are shown. in what way is model b better than model a? model b shows the types of elements in the compound, but model a does not. model b shows the three-dimensional shape of the molecule, but model a does not. model b shows how the atoms in the molecule are connected, but model a does not. model b shows the number of atoms of each element in the molecule, but model a does not