Which of the following molecules is polar? Group of answer choices

CF4

CH4

CH3Cl

CO2

Ageologist determines that a sample of a mineral can't be scratched by a steel nail but can be scratched by a masonry drill bit. based on this information, the sample mineral has to be softer than a. orthoclase. b. fluorite. c. apatite. d. corundum.

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

Which suspect most likely committed the robbery and how do you know