Answer:
80.7 × 10²³ molecules
It also contain the same number of atoms.
Explanation:
Given data:
Mass of hydrogen peroxide = 456.78 g
Number of molecules = ?
Number of atoms = ?
Solution:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
The number 6.022 × 10²³ is called Avogadro number.
For example,
Number of moles = mass/ molar mass
Number of moles = 456.78 g / 34 g/mol
Number of moles = 13.4 mol
one mole of hydrogen peroxide contain 6.022 × 10²³ molecules.
13.4 mol × 6.022 × 10²³ molecules/ 1 mol
80.7 × 10²³ molecules
It also contain the same number of atoms.
