Ascientist wants to speed up a chemical reaction. what are three things that he or she can do to increase the reaction rate?

The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?

Energy flows from the producer level to the level. is called

Match each scenario to the form of energy it represents