Question

What mass of gold, Au, contains the same number of atoms 9.0 g of aluminum, Al?

Answer 1

Answer:

Hi there ,

If both have same number of moles they have same number of atoms.

Al molar mass is 27

Number of moles of Al is Ms÷ Mwt

n= 9.0÷27= 0.33 mol

So, n of gold = 0.33

Mass of gold = no of moles × molar mass

Ms = n × Mwt

= 0.33 × 196.96 = 65.65 gm of gold which have same number of atoms of 9 gm alumimum

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