Question

calculate the number of atoms present in each of the sample? . . (atomic mass N=14,O=16). 1. 42g nitrogen. . 2. 80g oxygen ​

Answer 1

Answer:

6.022 x 10^22 atoms of N and 1.05 x 10^23 atoms of oxygen

Explanation:

no. of moles = given mass/molar mass

(molar mass is somewhat same as atomic mass)

no. of atoms = no. of moles x Avogadro's number

Avogadro's number = 6.022 x 10^23