It was not my urgency to learn stoichiometry now! I was helping a friend who is learning chemistry now. She did not have basic in chemistry. All the Maths teacher who are currently going back to studying would have to take Science as their minor subject. Though my basic has been somewhat rusty and blunt, I just need a few reading (that took me a few hours too!) to get done with the questions.
Stoichiometry- a chemistry branch that I did not learn much I guess. I learned a lot of biochemistry when I was in uni.