Define: Macromolecule. a. Polymers made from at least two different monomers. b. Materials added to a polymer to make it more flexible, soft. c. Materials that, when stretched, return to their original shape when released. d. Large or giant molecules.

The density of an unknown gas at 98°c and 740 mmhg is 2.50 g/l. what is the molar mass of the gas with work showed?

Seltzer water is created by placing water under pressure with carbon dioxide gas. which of the following statements best describe seltzer water: a. the solution will be slightly acidic b. the solution will be slightly basic. the solution will be strongly acidic. d. the solution will be strongly basic. e. the solution will be neutral

How hot is the suns corona? (integrated science)