Caffeine contains hydrogen, carbon, nitrogen, and oxygen atoms in a fixed ratio. is it a mixture or compund

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure

What are the major types of a chemical compound

Which statement characterizes synthetic polymers? a. they come from animals and plants. b. they are found in nature. c. they are made in a lab. d. they are components of starch.