Question

Difference between mole and molecule and when do we write mole and molecule while finding no. of atoms or molecules

Answer 1

Mole and molecule are totally different. Mole is just like dozen, You know there are 12 things in dozen, same way there are 6.23*10^23 THINGS in a mole. thses THINGS can be atom or molecule
Formula for calculating moles of an element with given weight
mole = weight/Molecular weight
suppose I say that you have 2 mole of oxygen. how many molecules in it?
1 mole oxygen has...................... 6.23*10^23 molecules
2 mole oxygen has ......................6.23*10^23 *2 molecules.