tsparkman2209 tsparkman2209
  • 11-01-2021
  • Chemistry
contestada

Calculate the atomic mass of Copper if copper-63 is 69.17% abundant and Copper-65 is 30.83% abundant.

Respuesta :

ardni313
ardni313 ardni313
  • 12-01-2021

The atomic mass of Copper : 63.6166 amu

Further explanation

Given

Copper-63 is 69.17%

Copper-65 is 30.83%

Required

The atomic mass of Copper

Solution

The elements in nature have several types of isotopes

Atomic mass is the average atomic mass of all its isotopes

Mass atom X = mass isotope 1 . % + mass isotope 2.%  ...

The atomic mass of Copper = 0.6917 x 63 + 0.3083 x 65

The atomic mass of Copper = 43.5771 + 20.0395

The atomic mass of Copper = 63.6166 amu

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