Question

Given the atomic mass of select elements, calculate the molar mass of each salt.

Element Beryllium (Be) Calcium (Ca) Copper (Cu) Cadmium (Cd) Bromine (Br) Molar mass (g/mol) 9.012 40.08 63.55 112.41 79.90
Match the numbers to the appropriate blanks in the sentences below. Make certain each sentence is complete before submitting your answer.
88.91 g/mol
119.98 g/mol
168.81 g/mol
143.45 g/mol
199.88 g/mol
223.35 g/mol
192.31 g/mol
272.21 g/mol
1. The molar mass of CaBr, is ________
2. The molar mass of BeBr, is ________
3. The molar mass of CdBra is _______
4. The molar mass of CuBr2 is_______

Answer 1

See explanation

Step-by-step explanation:

Molar mass is obtained as the sum of relative atomic masses as follow;

For CaBr = 40.08 + 79.90 = 119.98 g/mol

For BeBr = 9.012 + 79.90 = 88.912 g/mol

For CdBr2 = 112.41 + 2(79.90) = 272.21 g/mol

For CuBr2 = 63.55 + 2(79.90) = 223.35 g/mol