Question

in 6.2g of white phosphorus (P4). find the number of moles. atomic mass of P4=124u​

Answer 1

Explanation:

$no. \: of \: mole = \frac{Given \: weight}{Molecular \: weight} \\ \\ no. \: of \: moles = \frac{6.2}{124} \\ \\ \huge\boxed{ no. \: of \: moles = 0.05 moles}$

Answer 2

In 6.2g of white phosphorus (P₄).  The number of moles  (atomic mass of P₄=124u​ ) are 0.0125mol .

Explanation:

MOLE

The mole is the unit of measurement for amount of substance in the International System of Units (SI).

It 's  value is 6.022 x 10 ²³ number of atoms, molecules, ions, or electrons.

It is denoted by M(mol)

It can be calculated as : M=Given mass /atomic or molecular mass .

Let us solve the asked question for moles :

Atomic Mass of white phosphorous (P₄)= 124 x 4 = 496

Given mass of phosphorous = 6.2 g

Moles = given mass / atomic mass

Moles = 6.2 / 496

Moles = 0.0125mol