Question

calculate the formula unit mass of cacl2

Answer 1

ANSWER:
Atomic mass of Calcium = 40
Atomic mass of Chlorine(2)=35.5*2=71.
Formula unit mass of CaCl2=40+71=111g.

Answer 2

Answer: The formula unit mass of calcium chloride is 111 amu.

Explanation:

Formula unit mass is defined as the sum of the mass of all the atoms each multiplied its atomic masses that are present in the empirical formula of a compound. It is expressed in amu.

We know that:

Atomic mass of calcium = 40 amu

Atomic mass of chlorine = 35.5 amu

Formula mass of $CaCl_2=(1\times 40)+(2\times 35.5)]=111amu$

Hence, the formula unit mass of calcium chloride is 111 amu.