Can anyone explain how to use an activity series in chemistry? My teacher doesn't explain thoroughly.

This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.

What is the correct equation for cellular respiration?

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