2 NaOH what are the number of atoms

Explanation:

Given data:

Number of moles of NaOH = 2 mol

Number 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,

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

So in 2 mol of NaOH:

1 mol = 6.022 × 10²³ molecules of NaOH

2 mol × 6.022 × 10²³ molecules NaOH / 1mol

12.044 × 10²³ molecules NaOH

we can determine the number of atoms of each elements.

one mole of NaOH contain 1 mole sodium atom one mole hydrogen atom and one mole of oxygen atom.

1  mol = 6.022 × 10²³ H atoms

1 mol = 6.022 × 10²³  O atoms

1 mol = 6.022 × 10²³ Na atoms

So 2  mol,

2 mol =2 × 6.022 × 10²³ H atoms = 12.044 × 10²³ H atoms

2 mol =2 × 6.022 × 10²³  O atoms = 12.044 × 10²³ O atoms

2 mol =2 × 6.022 × 10²³ Na atoms = 12.044 × 10²³ Na atoms

                                                 Total = 36.132 × 10²³ atoms

the answer would be c