Question

A pure silver ring contains 2.80×10²² silver atoms. how many moles of silver atoms does it contain?

Answer 1

To calculate the number of moles in a silver ring with 2.80 × 1022 silver atoms, divide the number of atoms by Avogadro's number resulting in approximately 0.0465 moles of silver.

Step-by-step explanation:

The calculation of moles from a given number of atoms involves Avogadro's number, which is the key to converting between atoms and moles. Avogadro's number is defined as 6.022 × 1023 atoms per mole.

To find out how many moles are in 2.80 × 1022 silver atoms, we divide the number of atoms by Avogadro's number:

2.80 × 1022 atoms Ag
------------ = number of moles of Ag
6.022 × 1023 atoms/mol

This yields:

Number of moles of Ag = 4.65 × 10-2 moles

Therefore, a pure silver ring containing 2.80 × 1022 silver atoms holds approximately 0.0465 moles of silver.