Answer:
CuO(s) + H₂(g) --> Cu(s) + H₂O(l)
Explanation:
It is already balanced. You can see that the values of the elements of the reactants are equal to the values of the elements of the products.
County: cell
State: Tissue
Country: Organ
Continent: Organ system
World: organism
(smallest to largest)
Argon
1 18 grams
2 500g
4 960 grams
5 7 kilograms