Which of the following equations is balanced?

2h2+o2—2h20

2na+ o2–2na20

fes+hci —2fecl2 + h2s

in need of with chemistry!

Which statement describes both homogeneous mixtures and heterogeneous mixtures?

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.

What is the oxidation state of an individual bromine atom in nabro3?