Respuesta :

dylansg19
Avegadro's number = 6.02 x10^23 atoms
so
3.5g x 1mol/63.55g Cu x 6.02 x 10^23/ 1mol=3.32 x 10^22 atoms
samueladesida43

There are 3.3 × 10²² atoms in 3.5 grams of copper.

HOW TO CALCULATE NUMBER OF ATOMS:

  • The number of atoms of copper can be calculated by multiplying the number of moles of copper by Avogadro's number.

  • However, 3.5grams of copper (Cu) was given in this question. The number of moles in copper is calculated as follows:

  • no. of moles = 3.5g ÷ 63.5g/mol

  • no. of moles = 0.055mol

  • The number of atoms of copper can be calculated as follows:

  • no. of atoms = 0.055 × 6.02 × 10²³

  • no. of atoms = 0.33 × 10²³

  • no. of atoms = 3.3 × 10²² atoms of Cu.

  • Therefore, there are 3.3 × 10²² atoms in 3.5 grams of copper.

Learn more about how to calculate number of atoms at: https://brainly.com/question/15488332?referrer=searchResults

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