2. Yttrium barium copper oxide (YBCO) is a ceramic material that displays high-temperature

superconductivity. The chemical formula of YBCO is YBa₂Cu₂O+.

a. What is the molar mass of YBCO?

b. What is the mole fraction (also called atomic fraction) of each element in YBCO? [3]

[3]

c. What is the mass percent of each element in YBCO?

[3]