An atom contains one proton, one electron, and one neutron. which two particles are most similar in mass? the neutron and the electron the proton and the electron the proton and the neutron the neutron and the atom

Does anyone know a lot about how to: - calculate mass of magnesium metal - calculate the actual yield of magnesium oxide - calculate the theoretical yield of mgo - calculate the percent yield of mgo - determine the percent yield of mgo - determine the average percent yield of mgo i had to do an online lab and its asking these questions but i have no idea where to start or how to be able to find these things. i can post the chart of the data from the lab or if you can tell me exactly how i can find each.

This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.

Stage in which a star’s outer layers have started to cool and grow outward?