How many atoms in 179g of calcium?

Answer 1

20.

Answer 2

To find the number of calcium atoms in 179g of calcium, first calculate the molar mass of calcium which is approximately 40.08 g/mol. Next, divide the given mass by the molar mass to get the number of moles (179g / 40.08 g/mol ≈ 4.47 moles). Finally, use Avogadro's number (6.022 x 10^23 atoms/mol) to convert moles to atoms (4.47 moles * 6.022 x 10^23 atoms/mol ≈ 2.69 x 10^24 atoms). Therefore, there are approximately 2.69 x 10^24 atoms in 179g of calcium.