Question

What is the molar mass of CaCl2?

37.0 g/mole

54.0 g/mole

75.0 g/mole

1.11 x 102 g/mole

Answer 1

Answer: The correct option is
`1.11* 10^(2) g/mol`

Step-by-step 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* 10^(2) g/mol\approx 1.11* 10^(2) g/mol`

Hence, the correct option is
`1.11* 10^(2) g/mol`