avogadro's number

Mole concept

Last Updated on March 20, 2019 By Mrs Shilpi Nagpal 20 Comments

Mole Concept - Some Basic Concepts of Chemistry - Class 11 One gram atom of any element contains the same number of atoms and one gram molecule of any substance contains the same number of molecules. The value was found to be 6.022137 × 1023 The value generally used is 6.022 × 1023 . This is called Avogadro's number or Avogadro's constant (NA) Avogadro's … [Read more...] about Mole concept

Mole concept

Last Updated on March 20, 2019 By Mrs Shilpi Nagpal 22 Comments

Question 1 Define a mole? Question 2 What is the value of Avogadro's constant? Question 3 Define mole of an atom? Question 4 Define mole of a molecule? Question 5 Write the formula to calculate the number of moles? Mole Concept In a chemical reaction equation,it is more convenient to use quantity of substance in number of its molecules or atoms rather … [Read more...] about Mole concept