Which of the following has a molar mass of 110.984 ? CaCl_(2) K_(2)O LiNO_(3) NaCl

The correct answer is $CaCl_{2}$.<br /><br />The molar mass of $CaCl_{2}$ is 110.984 g/mol. This is calculated by adding the molar masses of calcium (Ca) and chlorine (Cl). The molar mass of calcium is 40.078 g/mol and the molar mass of chlorine is 35.453 g/mol. Since there are two chlorine atoms in $CaCl_{2}$, the total molar mass is 40.078 + 2(35.453) = 110.984 g/mol.