Question

Determine the mass in grams of a sample of natural copper that has 25 atoms

Answer 1

1 atom of Cu has a mass of 1.055×
`10^(-22)g`

Step-by-step explanation:

1 atom of copper must be converted in moles to express it as a quantity that can be converted into grams (our second step).

Avogadro's Number( 1 mole = 6.022 x
`10^(23)`particles and the relative atomic mass of copper( 1 mole of copper = 63.546 g ) are the equalities required to make this conversion.