Question

calculate the number of electrons in 14grams of nitrogen

Answer 1

we know that 1 mole of nitrogen weighs 14 grams

⇒ 1 mole = 6.023 × 10²³ atoms

⇒ 6.023 × 10²³ atoms weighs 14 grams

we know that one atom of nitrogen contains 7 electrons

⇒ 14 grams of nitrogen contains 6.023 × 10²³ atoms

⇒ 14 grams of nitrogen contains 6.023 × 10²³ × 7 electrons

⇒ 14 grams of nitrogen contains 4.2161 × 10²⁴ electrons

Answer 2

$\bold\color{red}{HOLA \: \: USERS}$

1 mole of any molecule has

6.022 x 1022 molecules, 0.05

moles ofN2 = 0.05 x 6.022 x 1022 molecules.

1 molecule of nitrogen has 14 electrons in it.