Ice cubes in water and explain why it is either a homogeneous or heterogeneous mixture.

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 many moles of carbon dioxide will form if 2.5 moles of c3h8 is burned

What volume would 2.25 moles of ne has occupy at stp?