An element has 8 protons and 8 neutrons in its nucleus and 8 electrons revolving around the nucleus. what is the atomic number and atomic mass of this element? the atomic number is 16 and the atomic mass is 8. the atomic number is 8 and the atomic mass is 8. the atomic number is 8 and the atomic mass is 16. the atomic number is 16 and the atomic mass is 4. the atomic number is 4 and the atomic mass is 16.

How many moles of magnesium is 3.01 x10^22 atoms of magnesium?

How do scientists think that gravity affected the formation of our solar system?

Plz mark brainliest 30 points1) find the momentum of a 12 kg snowball that is rolling with a velocity of 9 m/s.2) an 8 ball with a mass of .5 kg is sitting at rest. it is hit by the cue ball (1 kg) traveling at 2.5 m/s. if the cue ball is at rest after the collision, how fast is the 8 ball traveling after the collision? 3) two football players are running toward each other. if the offensive player is 75 kg and is running 8 m/s, how fast must the 60 kg defensive player run in order for the two players to hit and stop?