Study the balanced chemical reaction.
2Cu + O2 → 2CuO
There are 6.45 g of copper(II) oxide (CuO) produced. What amount of the product, in g, is copper?
5.15 g
8.07 g
3.23 g
1.60 g
Is it B?
B? Did you just guess?
How can there be more Cu than the total mass of CuO?
Where's your work?
using the mol wts,
Cu/CuO * 6.45 = 63.54/79.54 * 6.45 = 5.15 g