Answer:
To find the molar mass of BeCo3, we need to find the atomic masses of each element and add them together in the correct ratio:
Be: 9.01 g/mol
Co: 58.93 g/mol
O: 16.00 g/mol (there are three oxygen atoms)
Molar mass of BeCo3 = (1 x Be atomic mass) + (1 x Co atomic mass) + (3 x O atomic mass)
Molar mass of BeCo3 = (1 x 9.01 g/mol) + (1 x 58.93 g/mol) + (3 x 16.00 g/mol)
Molar mass of BeCo3 = 9.01 g/mol + 58.93 g/mol + 48.00 g/mol
Molar mass of BeCo3 = 115.94 g/mol
Therefore, the molar mass of BeCo3 is 115.94 g/mol.