Which of the following describes a compound? (hint: carbon and oxygen both appear on the periodic table.)
oa
a piece of pure carbon, containing only carbon atoms
b. oxygen gas surrounding a solid piece of carbon
c. a substance made of two oxygen atoms for each carbon atom
d. carbon and oxygen atoms mixed without being bonded together
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Which statement best describes the oxidation numbers of the atoms found in magnesium chloride? a. magnesium has a 2- oxidation number and chlorine has a 1+ oxidation number. b. magnesium has a 2- oxidation number and chlorine has a 2+ oxidation number. c. magnesium has a 2+ oxidation number and chlorine has a 1- oxidation number. d. magnesium has a 1+ oxidation number and chlorine has a 1- oxidation number.

Why doesn't heat added to water make the tempature rise above 100c

Amixture with the same composition throughout is!