Question

Use the equation 2Cu+02->2CuO to find how many moles of copper would react with 7.25 mol O2.

Answer 1

Answer:

14.5 moles Cu

Explanation:

Given:

Moles of O2 = 7.25 moles

Reaction:

$2Cu + O2 \rightarrow 2CuO$

Based on the reaction stoichiometry:

2 moles of Cu reacts with every  mole of O2

Therefore, moles of Cu that would react with 7.25 moles of O2 would be:

= $\frac{7.25\ moles\ O2* 2\ moles\ Cu}{1\ mole\ O2} \\\\14.5\ moles\ Cu$

Answer 2

2 Cu + O2 = 2 CuO

2 moles Cu ----------- 1 mole O2
moles Cu -------------- 7.25 moles O2

moles Cu =7.25 * 2 / 1

moles Cu = 14.5 / 1 => 14.5 moles

Answer A