6. Calculate the percentage of oxygen in copper(11)
sulphate crystals (CuSO4.5H2O)​

What is the percentage by mass of silicon (si) in iron aluminum silicate (fe3al2(sio4)3)?

For the following, determine the type of reaction and then give products.

Calculate the expected ph values of the buffer systems from the experiments (a,b,c,d), using the henderson- hasselbalch equation, ph-pka+log[a-]/[ha]. use for pka values carbonic acid= 6.37, and acetic acid= 4.75.