What is the atomic mass of an atom that contains 28 protons, 28 electrons, and 30 neutrons? 86
28
58
56

Electrons are extremely important to what area of technology? a) anti-aging research b) household product development c) electronics d) drug discovery

Athe top of a hill, an athlete on a skateboard has x joules of mechanical energy. how much mechanical energy will she have at the bottom of the hill? ignore the effects of friction.

What is the average rate of the reaction between 10 and 20 s?