What is the mass of 1.20 × 1023 atoms of phosphorus?

show your work, please.

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.

George is a dalmatian puppy. describe what happens to light that allows you to see george’s black and white coat.

Draw the lewis dot structure for each of the following polyatomic ions