Cu(s) + 4hno3(aq)= cu(no3)(aq)+ 2no2(g) + 2h2o(l) how much no2 gas would be formed by the reaction of 20.0g of cu?

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.

Ineed with my science work! it’s due tomorrow!

Explain how the integumentary system plays a crucial role in the ability to maintain homeoestasis