Answer:
4.03 × 10²³ molecules
Step-by-step explanation:
Given data:
Mass of CH₄O = 22.0 g
Number of molecules = ?
Solution:
Number of moles of CH₄O:
Number of moles = mass/molar mass
Number of moles = 22.0 g/ 33 g/mol
Number of moles = 0.67 mol
Number of molecules:
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.
1 mole = 6.022 × 10²³ molecules
0.67 mol × 6.022 × 10²³ molecules / 1 mol
4.03 × 10²³ molecules