How many particles are in 4.5 moles of beryllium carbonate

27.099 × 10²³ particles

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

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.