Question

How many atoms in 6.17 grams of copper(ll) chloride?

Answer 1

2.8 x 10²²atoms

Explanation:

Given parameters:

Mass of Copper(II) Chloride = 6.17g

Unknown:

number of atoms = ?

Solution:

The mole is a convenient unit that represents a substance that contains the avogrado's number of particles.

  Let us express the given mass as a mole;

Number of moles of CuCl₂ = $\frac{mass}{molar masss}$

Molar mass of CuCl₂ = 63.5 + 2(35.5) = 63.5 + 71 = 134.5g/mol

 Number of moles of CuCl₂ = $\frac{6.17 }{134.5 } = 0.046mole$

Now;

  1 mole of a substance = 6.02 x 10²³ atoms

  0.046 mole = 0.046 x 6.02 x 10²³ = 2.8 x 10²²atoms

learn more:

Number of moles brainly.com/question/1841136

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