How can the strength of metallic bonding be measured?

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.

How have the greenhouse gasses increased from the year 2000 to 2018

Which of the following is the molecular formula for a simple sugar? a. cooh b. h2o c. oh d. c6h12o6