What is the solubility product expression for La 2(CO 3) 3? a. Ksp = [2La3+]2[3CO32–]3
b. Ksp = [La3+]2[CO32–]3
c. Ksp = [2La3+][3CO32–]
d. Ksp = [2La3+]2[CO32–]3
e. Ksp = [La2+]2[CO32–]3

An unknown substance is a white solid at room temperature and has a melting point of 78 °c. which of the following substances is most likely to be the identity of the unknown sample? a. naphthalene, a molecular solid with the formula c10h8 b. silica, a network solid held together by covalent bonds with the formula sio2 c. calcium chloride, an ionic compound with the formula cacl2 d. water, an molecular compound with the formula h2o