What is the volume of a 73.8 g sample of gold at stp

Embryos of different species look very similar, which shows that the organisms share a ancestor.

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

Correct relationship between molecular formula and empirical formula