Why? I need some help I would like at least 1 answer

Thanks,
Vishnu

Which of the following is an example of units for speed

Which statement best describes copper? a. it has a low resistance and prevents charges from moving freely. b it has a high resistance and allows charges to move freely. c. it has a high resistance and prevents charges from moving freely. d. it has a low resistance and allows charges to move freely

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2