Debbie and Ben are performing a frog dissection in their biology class. As a safety precaution, Debbie and Ben must do all of the following EXCEPT
A) wear a lab apron and goggles.
B) pre-wash the frog in tap-water to remove excess preservative.
C) read all instructions in the lab manual before beginning the dissection.
D) close the windows and doors to the classroom to avoid the escape of fumes.

What is the chemical formula of the following compound

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.

Which of the following natural processes is most likely to support the formation of an underwater sinkhole? a pollution buildup from deposited minerals b limestone cave collapsing due to changes in sea level c erosion of large amounts of sand moved by ocean waves d oxidation of rock formed by chemical weathering