Question

how many atoms there in 72 u of carbon and 72 g of carbon​

Answer 1

mass of one atom of C is 12 u , so there are six C atoms in 72 u , now in 12 g there are Avogadro no. of carbon atoms that is 6.022 × 10^23 atoms , so in 72 g , 6 × 6.022 × 10^23 atoms

Answer 2

Answer:

72u=72×1.6605×

${10}^{ - 31}$

carbon is here and

12g c contains 1u

72g c contains 4u