joycem437
joycem437 joycem437
  • 19-01-2021
  • Chemistry
contestada

a sample of 1.7×10^23 molecules of silicon is ____ moles.​

Respuesta :

quasarJose
quasarJose quasarJose
  • 19-01-2021

Answer:

0.28moles of silicon

Explanation:

Given parameters:

Number of molecules of silicon  = 1.7 x 10²³molecules

Unknown:

Number of moles of the silicon  = ?

Solution:

A mole of any substance contains the Avogadro's number of particles.

   1 mole of a substance contains 6.02 x 10²³molecules;

  So;

     1.7 x 10²³molecules contains [tex]\frac{1.7 x 10^{23} }{6.02 x 10^{23} }[/tex]   = 0.28moles of silicon

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