How many grams of Mg(NO3), are contained in 50.0 mL of a 2.63 M solution?

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.

What is the maximum number of electrons that an atomic orbital can contain?

What will most likely happen when two bromine atoms bond together?