What’s the difference between gravity separation and froth floatation process.(in two points.)

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.

__can be defined as which velocity changes

What is the molar mass of a gas that has density of 2.054 g/l