avogadro's constant

Question 1

the mole

Answer 1

amount of substance in grams that has the same number of particles as there are atoms in 12 grams of carbon-12

Question 2

avogadro’s constant

Answer 2

there are 6.02 x 10^23 atoms in 12 grams of carbon-12. one mole of any specified entity contains 6.02 x 10^23 of that entity

Question 3

how to calculate no. of particles

Answer 3

amount of substance (in mol) x avogadro’s constant

Question 4

density

Answer 4

mass/volume
given in g cm -3