Answer:
CuO
Step-by-step explanation:
As given the molar mass of following Copper Oxide is 79.55 g.mol⁻¹,
CuₐOₓ
Where "a" and "x" are unknown.
As we know the atomic masses of Cu and O are;
Cu = 63.55 g.mol⁻¹
O = 16 g.mol⁻¹
So, it is clear that this oxide is containing only one Copper atom,
So,
Molecular Mass = 79.55
- Copper Mass = 63.55
--------------
16
Hence, 16 g.mol⁻¹ is the mass of one mole of Oxygen atoms, Hence, this oxide contains only one oxygen atom.
Result:
The molecular formula of given copper oxide is CuO.