Using the average atomic mass, calculate the mass in grams of 143 iron atoms

1326.6 * 10⁻²³g

Explanation:

Given dа ta:

Number of atoms of iron = 143 atoms

Average atomic mass of iron = 55.845 amu

Mass of iron = ?

Solution:

It is known that,

55.845 g of iron = one mole of iron = 6.02 * 10²³ atoms

For 143 atoms:

143 atoms / 6.02 * 10²³ atoms * 55.845 g

23.754 * 10⁻²³ * 55.845 g

1326.6 * 10⁻²³g