Question

Calculate the number of particles in each of the following - 3 a. 46g of Na-atoms c. 8g of O2 molecules b. 0.1 mole of carbon atoms ​

Answer 1

Explanation:

(a) 1 mole of Na contains = 6.022 × 10^23 atoms

46 g of Na atoms will contain = 6.022 × 10^23 × 46/23

= 1.2044 × 10^24 atoms

(b) 1 mole of O2 molecule contains = 6.022 × 10^23 atoms

hence, 8 g of O2 molecules will contain = 6.022 × 10^23 × 8/32 molecules

= 1.5055 × 10^23 molecules

(c) 1 mole of carbon atoms = 6.022 × 10^23 atoms

hence, 0.1 mole of carbon atoms = 6.022 × 10^23 × 0.1

= 6.022 × 10^22 atoms