Question

Suppose a piece of silver jewellery contains 6.85×10^22 atoms of silver (Ag). How many moles of silver atoms are in the piece of jewellery?

Answer 1

To find the number of moles, divide the number of atoms by Avogadro's number. In this case, the number of moles of silver atoms in the piece of jewellery is approximately 0.1138 moles.

Step-by-step explanation:

To find the number of moles of silver atoms in the piece of jewellery, we need to use Avogadro's number. Avogadro's number tells us that 1 mole of any substance contains 6.02 × 1023 atoms or molecules. So, to find the number of moles, we divide the given number of atoms by Avogadro's number.

Number of moles = Number of atoms / Avogadro's number

Number of moles = 6.85 × 1022 atoms / 6.02 × 1023 atoms/mol

Number of moles = 0.1138 moles