what is equal to the number of particles in 24 grams of carbon-12?

number of particles in 24 grams of carbon-12 = 1.2044 × 10²⁴

Explanation:

The mole (abbreviated mol) is the SI measure of quantity of a “chemical entity,” such as atoms, electrons, or protons. It is defined as the amount of a substance that contains as many particles as there are atoms in 12 grams of pure carbon-12.

1 mol contains 6.022×10²³ elementary entities of the substance.

Number of moles = Mass / Molar mass

Mass mentioned in the question = 24g

Molar mass of carbon = 12g/mol

Number of moles = 24 /12 = 2 mol

If 1 mol contains 6.022×10²³ elementary entities,

2 mol contains ( 2 * 6.022 × 10²³) = 12.044 × 10²³ number of particles

number of particles in 24 grams of carbon-12 = 1.2044 × 10²⁴

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).