What is the percent of Cu in CuBr2

Answer 1

The percent of Cu in CuBr2 can be calculated using the atomic masses and stoichiometry of the compound.

The atomic mass of Cu is 63.55 g/mol. CuBr2 is composed of one Cu atom and two Br atoms, with atomic masses of 79.90 g/mol and 35.45 g/mol, respectively.

The molecular mass of CuBr2 can be calculated as:
(1 x Cu) + (2 x Br) = (1 x 63.55 g/mol) + (2 x 79.90 g/mol) = 223.35 g/mol

To determine the percent of Cu, we divide the atomic mass of Cu by the molecular mass of CuBr2 and multiply by 100:
(63.55 g/mol / 223.35 g/mol) x 100 = 28.47%

Therefore, the percent of Cu in CuBr2 is approximately 28.47%.