can you please suggest me a teacher who can explain me mole concept perfectly!!!!!

Asked by pawarkrithika1234 | 11th Mar, 2019, 09:14: PM

Expert Answer:

Mole Concept:
 
1 mole of a substance is equal to its atomic mass or molecular mass expressed in grams.
 
The atomic mass of sodium is 23 grams.

Therefore, 23 grams of sodium is equal to one mole of sodium atoms.

Similarly, the molecular mass of oxygen (O2) =  2 × Atomic mass of oxygen

                                                                 = 2 × 16 = 32 g

So, 32 grams of oxygen is equal to one mole of oxygen molecules.

1 mole (of anything) = 6.022 × 1023 in number

For questions based on mole concept please refer the below link:

Mole Concept

Answered by Varsha | 12th Mar, 2019, 10:58: AM