Question

mole concept how to solve pr
oblems easily

Answer 1

its nothing ....campare the weight is element to 12th part carbon ..........we can say relative camparison to 12 carbon

Answer 2

Go through the problems nicely and understand them in a concentrating mind and always question yourself how you will do this and what is the base behind it and the formula which you can apply to find out it. Try practicing more than 1 hour a day. I'm sure it will help you