Answer:
0.5 mole
Explanation:
The equation for the reaction is given below:
2Cu + S —> Cu2S
We can calculate the mole of copper (Cu) needed to react with sulphur (S) to produce 0.25 mole of copper(I) sulfide (Cu2S) by doing the following:
From the balanced equation above,
2 moles of Cu reacted to produced 1 mole of Cu2S.
Therefore, Xmol of Cu will react to produce 0.25 mole of Cu2S i.e
Xmol of Cu = 2 x 0.25 = 0.5 mole
Therefore, 0.5 mole of copper (Cu) will react with sulphur (S) to produce 0.25 mole of copper(i)sulfide (Cu2S)
