Compound formula: MgCl2 Element: Mg

# of Atoms: 1

Element: Cl

# of Atoms: 2

gram formula weight (g): 95.21

Compound Formula: KNO3

Element: K

# of Atoms:

Element: N

# of Atoms:

Element: O

# of Atoms:

gram formula weight (g):

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