What is the density of carbon dioxide gas if 0.196 g occupies a volume of 100 mL?

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins

Heat energy, carbon dioxide, and water are released through which process? a. photosynthesis b. depolymerization c. digestion d. cellular respiration

How does carbon monoxide pose the greatest threat to humans? a. it can be produced by wood fires. b. it can be produced by home furnaces. c. it is produced by acid rain. d. it is produced by modern automobiles.