Copper sulfide is found written as both CuS and Cu2S. Why are there two forms for writing this chemical formula?

Which term refers to a property that depends only on the amount of a substance? ©@

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion

6what is the importance of water on earth? a) it keeps the top layer of the geosphere cool b) it allows life to exist c) it provides ice at the poles d) it creates earth's blue color from space