Question

Find number of molecules in 42 gms of N atom?

Answer 1

Answer:

1.8066×10^24

atoms

Explanation:

Mass of nitogen molecules =42 g

Molar mass of nitogen molecules=42 g

Each nitrogen molecules contain 2 nitrogen atoms.

Moles of nitrogen molecules =

Molar mass

Mass

=

42/28

=1.5 moles

Number of atoms of nitrogen present in 42 grams of nitrogen gas =2×no. of moles×N

A

=2×1.5×6.022×10^23

=1.8066×10^24

atoms