(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)

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

How do temperature and salinity affect deepwater currents? as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them.

The rate constant for the reaction below is 6.2 x 10−5 mol l−1 s −1. if the initial concentration of a is 0.0500 m, what is its concentration after 115 s?