19. kepler's laws follow which law discovered by sir isaac newton? a. universal law of force b. universal gravitational law c. universal laws of attraction d. universal law of friction so am thinking b is right answer > ?

1) how many electrons are in each energy level of the following elements? a. he b. na c. na d. ne 2) how many valence electrons are percent in the following atoms? a. s b. mg c. be d. cl 3) which of the following elements are stable as atoms? a. he b. o c. cl d. ar if you are able to provide the work as to how you got the answers that would be greatly appreciated. : )

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure

What will most likely happen when two bromine atoms bond together?