The formula mass of calcium chloride is

[Given atomic masses: Ca = 40 u, Cl = 35.5 u]

The formula mass of calcium chloride is 111 u.
Calcium chloride, a salt with the chemical formula $\mathit{CaC}{l}_2$ is an inorganic compound. It can be produced by mixing calcium hydroxide with hydrochloric acid to neutralize it. The formula mass of calcium chloride.

$\left(\mathit{CaC}{l}_2\right)= \mathit{Atomic} \mathit{mass} \mathit{of} 1 \mathit{calcium} \mathit{atom} + \mathit{Atomic} \mathit{mass} \mathit{of} 2 ch\mathit{lorine} \mathit{atoms}$  $\Rightarrow 1 \times 40 + 2 \times 35.5$

$\Rightarrow 40 + 71$
$\Rightarrow$ 111 u
Thus, the formula mass of calcium chloride $\left(\mathit{CaC}{l}_2\right)$ is 111 u.