(b) Compound A (CH20) gives off oxygen on treatment with sodium metal and also decolonizes Br in CCL to give organic compound B. Compound A on treatment with b in NaOH gives lodoform and a salt C which after acidification gives a white solid D(CHO). Using knowledge of organic chemistry, identify structures A, B, C and D. (10 marks)

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.

Elements that do not have full outer electron shells will donate, share, or take electrons from other atoms. choose the items that have the correct binary ionic formula.

What is the molar mass of ca(cio4)2