Question

Problem 1.Calculate the number of molecules
in 7.0 g of nitrogen.​

Answer 1

Explanation:

As per Avogardo's Law number of atoms in 1 mole of any substance = 6 x 10 to the power -23. Therefore no of atoms in 7 gms of nitrogen = 6 x 0.25 x 10 to the power -23.

Answer 2

Explanation:

$\huge\bf{\mid{\overline{\underline{ANSWER:-}\mid}}}$

$\huge\bold{Given:-} \\ \\ weight_{N_{2}} = 7g \\ \\ Mole = \frac{Given \: weight}{Molecular \: weight} = \frac{7}{28} = 0.25 \\ \\ No. \: of \: molecules = 0.25 × 6.022×{10}^{23} = 1.50×{10}^{23}$