What is the mass fraction of copper in copper (II) oxide CuO?
| April 18, 2021 | education
Given: Copper oxide bivalent CuO.
ω% (Сu) =?
Decision:
In order to find the mass fraction of copper, you first need to find the relative molecular weight of copper oxide.
Mr (CuO) = 64 + 16 = 80
We find the mass fraction of a substance by the formula:
ω = m1 / m x 100%
ω% (Cu) = 64/80 * 100% = 80%
answer: the mass fraction of copper in bivalent copper oxide is equal to 80%.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.
