what do you mean by feeling sorry..
A colorless compound undergoes decomposition produces compound A, which is yellow and produce compound B (oxide of nitrogen). (a) Name the type of reaction. Why? (b) Write the balanced chemical equation. (c) What is the colour of compound B? (d) What is your observation? (e) What are the precautionary steps you would adopt while performing this activi..

hmm. .. buble unnie ..

now you tell me what happened to cupcake unnie ..

as everyone seem to tell you everything...​