How many moles of Cu do you need to react with 12 moles of O2?
2Cu(s) + O2(g) 2CuO(s)

24 mol Cu

General Formulas and Concepts:

Chemistry

Explanation:

Step 1: Define

RxN: 2Cu (s) + O₂ (g) → 2CuO (s)

Given: 12 moles O₂

Step 2: Stoichiometry

= 24 mol Cu

Step 3: Check

We are given 2 sig figs.

Our final answer is in 2 sig figs, so no need to round.

pv=nrt

explanation:

the answer your looking for is c).