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How do Kepler's and Newton's laws apply to planets and man-made satellites?
A. Only satellites obey Kepler's and Newton's laws.
B. Only planets obey Kepler's and Newton's laws.
C. Satellites and planets both obey Kepler's and Newton's laws.
D. Neither satellites nor planets obey Kepler's and Newton's laws.
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Ibeg i need 20. a reaction produces 4.93 l of oxygen, but was supposed to produce 1 mol of oxygen. what is the percent yield?

Fred is studying a substance that is made out of only one element. this means that

An uncovered pot of water lies out in the sun. which statements correctly describe what happens at the surface of the liquid water? 1. the vapor pressure remains constant regardless of the water temperature. 2. the vapor pressure is produced by water molecules that have evaporated. 3. the vapor pressure increases as the sun heats the water in the pot. 4. evaporation stops once the vapor pressure reaches a certain point. 5. evaporation and condensation both occur on the liquid’s surface.