Answer:
27.099 × 10²³ particles
Step-by-step explanation:
Given data:
Number of moles = 4.5 mol
Number of particles = ?
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,
18 g of water = 1 mole = 6.022 × 10²³ molecules of water
1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen
For Beryllium carbonate:
1 mole of Beryllium carbonate = 6.022 × 10²³ particles
4.5 mol × 6.022 × 10²³ particles / 1 mol
27.099 × 10²³ particles