mbalenhlezondi6 mbalenhlezondi6
  • 07-12-2020
  • Physics
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3. How many atoms are there in 1 kg of gold, if its atomic mass is 197 u?
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Respuesta :

i190761 i190761
  • 07-12-2020

Answer:

Let’s calculate the molar quantity of gold first.

(1000×g)/(196.97×g×mol^-1) = 5.077 mole

So we know that 1 mole of anything = 6.02214076×10^23 of individual objects.

So we can multiply this value by our molar quantity of gold.

5.077 × 6.02214076×10^23 = 3.057 × 10^24 atoms of gold.

Therefore, 1 kg of a gold bar has 3.057 × 10^24 atoms

Explanation:

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