Question

What is the molar mass of CaCl2?

Answer 1

Answer: The correct option is $1.11\times 10^{2} g/mol$

Explanation:

Atomic mass of calcium ,Ca = 40.07 g/mol

Atomic mass of chlorine ,Cl = 35.5  g/mol

Molar mass of $CaCl_2$:

= (Atomic mass of Ca+2 × (Atomic mass of Cl))

= (40.07 g/mol + (2 × 35.5))=111.07 g/mol

$111.07=1.1107\times 10^{2} g/mol\approx 1.11\times 10^{2} g/mol$

Hence, the correct option is $1.11\times 10^{2} g/mol$