12. Except for special cases such as peroxides, oxygen has an oxidation number of in compounds.
А. +1
В. -2
ОООО
С. -1
D. +2

Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture

Liv sheldon given the balanced equation for an organic reaction: c2h2 + 2cl2 → c2h2cl4 this reaction is best classified as *

How have the greenhouse gasses increased from the year 2000 to 2018