Balance the following equations. (use the lowest possible whole number coefficients. include states-of-matter under the given conditions in your answer.)
(a) zno(s) + hcl(aq) → zncl2(aq) + h2o(l)
determine the possible mole ratios

Which of the following describes a compound? (hint: carbon and oxygen bo a. 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 carbon and oxygen atoms mixed without being bonded together