Which best represents a balanced equation? A.
4H + 2O2 eq132916_b1 2H2O2

B.
HgO eq132916_b1 Hg + O2

C.
2Fe + O2 eq132916_b1 Fe2O3

D.
2H2 + O2 eq132916_b1 2H2O

If a solution had a ph of 7 what is the solution

Hey guys so i need to know what is _nh3+> nh4oh ~chemistry~

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state.a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car