the table shows the concentration of a reactant in the reaction mixture over a period of time. reactant concentration time concentration 0 s 1.8 m 210 s 1.2 m 450 s 0.8 m 580 s 0.6 m 720 s 0.4 m what is the average rate of the reaction over the entire course of the reaction? 1.6 × 10−3 1.9 × 10−3 2.0 × 10−3 2.2 × 10−3

Imagine that a new planet is discovered with two moons of equal mass: moon a and moon b. the mass of the new planet is greater than the combined mass of its moons. moon a is farther away from the new planet than moon b. what is the planet's gravitational pull on moon a compared to the planet's gravitational pull on moon b? the planet's gravity repels moon a with a greater force than it repels moon b, which is why moon a is farther away. the gravitational pull on moon b is greater than on moon a because moon b is closer to the new planet than moon a. the gravitational pull on moon b is greater than on moon a because moon b is farther away from the new planet than moon a. the gravitational pull on moon a is the same as the gravitational pull on moon b because distance does not affect the planet's gravity.