Calculating the Number of Gold Atoms in a Pure Gold Ring

What is the process to determine the number of gold atoms in a pure gold ring?

To determine the number of gold atoms in a pure gold ring, what calculation should be done?

Answer:

The process to determine the number of gold atoms in a pure gold ring involves multiplying the number of moles of gold by Avogadro's number. The pure gold ring contains approximately 3.71 x 10^26 gold atoms.

When calculating the number of gold atoms in a pure gold ring, it is important to understand the relationship between moles, atoms, and Avogadro's number. Avogadro's number is a fundamental constant in chemistry that defines the number of entities (atoms, molecules, ions, etc.) in one mole of a substance.

In this case, we are given that the pure gold ring contains 6.17 x 10^2 mol of gold (Au). By multiplying this quantity by Avogadro's number (6.022 x 10^23 atoms/mol), we can determine the total number of gold atoms in the ring.

The formula to calculate the number of atoms is: Number of atoms = Number of moles * Avogadro's number

Plugging in the values: Number of atoms = 6.17 x 10^2 mol * 6.022 x 10^23 atoms/mol Number of atoms = 3.71 x 10^26 gold atoms

Therefore, the pure gold ring contains approximately 3.71 x 10^26 gold atoms. This calculation is essential in understanding the composition of materials and their atomic structure.