Mrs. Hillis runs 5.6 miles every evening. How far does she run in feet? (5,280 ft = 1
mile)

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?

13. a covalent bond between two atoms is likely to be polar if: a. one of the atoms is much more electronegative than the other. b. the two atoms are equally electronegative. c. the two atoms are of the same element. d. the bond is part of a tetrahedrally shaped molecule. e. one atom is an anion.