Which of the following is equal to the number of particles in 18 grams of carbon-12

1.5 moles

Explanation:

Given dа ta:

Mass of Carbon = 18 g

Number of particles = ?

Number of moles = ?

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 18 g carbon:

18 g / 12 g/mol = number of moles

1.5 moles

1.5 * 6.022 * 10²³ particles

9.03 * 10²³ particles