In the figure above, according to Kepler's laws of planetary motion, a. Ar = A2.
c. if Dtz = Dt2, then the orbit is circular.
b. DL: > Dt2.
d. if Dtz = Dtz, then A: = A2.
Please select the best answer from the choices provided

The enthalpy of formation of water is -285.8 kj/mol. what can be inferred from this statement?

Base your answer on the information below and on your knowledge of chemistry. nitrogen dioxide, no2, is a dark brown gas that is used to make nitric acid and to bleach flour. nitrogen dioxide has a boiling point of 294 k at 101.3 kpa. in a rigid cylinder with a movable piston, nitrogen dioxide can be in equilibrium with colorless dinitrogen tetroxide, n2o4. this equilibrium is represented by the equation below. 2no2(g) n2o4(g) + 58kj at standard pressure, compare the strength of intermolecular forces in no2(g) to the strength of intermolecular forces in n2(g).

How many moles of carbon dioxide will form if 2.5 moles of c3h8 is burned