Is it true or false for diffusion to work molecules have to travel through water?

Find the protons, electrons and neutrons for strontium with a mass of 83

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.

This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.