If 200mL of water is added to 10mL of 4M solution, what is the concentration of the dilute solution

How does a scientist the government? a. the scientist tells people in society what to do. b. the scientist determines the policies that the government spends money on. c. the scientist provides unbiased information to the government. d. the scientist makes laws based on his or her research results.

Which common material is an example of a polymer? (25 pts) a. steel b. plastic c. petroleum d. rubbing alcohol

Ahypothesis must be testable and falsifiable to be considered scientific a. trueb. false