Answer:
231.31 g
Explanation:
We are given;
- The mass of CuO produced as 3.64 moles
- The equation fro the reaction as
2Cu+O2 → 2CuO
We are required to determine the mass of copper that would react.
- In this case, we are going to use the concept on mole ratio.
- From the balanced equation,
2 moles of Cu reacts with 1 mole of oxygen to yield 2 moles of CuO
- Therefore, the mole ratio of copper (Cu) to CuO is 2: 2 or 1 : 1 (simplified)
- Therefore;
Moles of Cu = moles of CuO
Thus, moles of Cu = 3.64 moles
But, Mass = Number of moles × atomic mass
Atomic mass of copper = 63.546
Thus,
Mass of Cu = 3.64 moles × 63.546 g/mol
= 231.31 g
Thus, 231.31 g of copper will react to produce 3.64 moles of CuO
