Respuesta :

nkirotedoreen46

Answer:

2.355 times

Explanation:

  • An aluminium atom has an atomic mass of 26.98 g while a copper atom has an atomic mass of 63.55 g.
  • The ratio of the mass of Aluminium atom to mass of a copper atom is:

        = 26.98 g : 63.55 g

         = 1 : 2.355

  • Therefore, the mass of a copper atom is 2.355 times the mass of an aluminium atom.
  • A copper atom is 2.355 times more massive than an aluminium atom.

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