Question

Calculate the molar mass of each salt.

Element Molar mass (g/mol)
Beryllium (Be) 9.012
Magnesium (Mg) 24.31
Cobalt (Co) 58.93
Cadmium (Cd) 112.41
Iodine (II) 126.90

a. The Molar mass of CaBr2 is:_______
b. The Molar mass of BeBr2 is:_______
c. The Molar mass of CdBr2 is:_______
d. The Molar mass of CuBr2 is:_______

Answer 1

a.

`M_(CaBr_2)=40.08+79.9*2=199.88 g/mol`

b.

`M_(BeBr_2)=9.012+79.9*2=168.81g/mol`

c.

`M_(CdBr_2)=112.41+79.9*2=272.21g/mol`

d.

`M_(CuBr_2)=63.55+79.9*2=223.35g/mol`

Step-by-step explanation:

Hello!

In this case, since the molar mass of a compound is computed by adding the molar mass of each element composing it and multiplying it by the number of atoms in the molecule, we have:

a.

`M_(CaBr_2)=40.08+79.9*2=199.88 g/mol`

b.

`M_(BeBr_2)=9.012+79.9*2=168.81g/mol`

c.

`M_(CdBr_2)=112.41+79.9*2=272.21g/mol`

d.

`M_(CuBr_2)=63.55+79.9*2=223.35g/mol`

Best regards!