Question

Calculate the percentage of excess air used for the complete combustion of 100kg coal sample if it contains 81%C,,4%H,1?5%N,1.2%S and 3%o. The total air used for the combustion including the excess air is 1284.5kg

Answer 1

Answer:

of concentrated sulphuric acid to 50ml of water and mix it well.

a

Draw and name the apparatus that he can use to exactly take 2ml from the

container where concentrated sulphuric acid is stored? (1)

Draw and name the apparatus he can use to mix the solution well?