H is 4*10^6 M , OH is 2.5*10^-9 M
Answer: In a metallic bond, each metal atom is surrounded by lots of other metal atoms, and they all share their valence electrons. When two oxygen atoms bond, they become a molecule and don't interact much with other molecules.
Explanation:
4. 4 C + S8 = 4 CS2
5. H2 + O2 = H2O2 is already balanced.
6. 4 Na + O2 = 2 Na2O
The answer is <span>Beijing, China</span>
Mass number (A) =protons (p+) + neutrons(n°)
