The gravitational force exerted by the Moon on an 82.0-kg astronaut is 129.8 N. The distance of the astronaut above the Moon's surface is km. (mass of the Moon = 7.3483 x 10^22 kg, radius of the Moon = 1.7374 x 10^6 m)

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This is what i found on google “according to the collision theory, the following criteria must be met in order for a chemical reaction to occur: molecules must collide with sufficient energy, known as the activation energy, so that chemical bonds can break. molecules must collide with the proper orientation.” i hope this information you.