Respuesta :

Space

Answer:

3.42 × 10²³ atoms CuCl

General Formulas and Concepts:

  • Avagadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.
  • Dimensional Analysis

Explanation:

Step 1: Define

3.42E23 molecules CuCl

3.42 × 10²³ molecules CuCl

Step 2: Convert (DA)

[tex]3.42 \cdot 10^{23} \ molecules \ CuCl(\frac{6.02 \cdot 10^{23} \ atoms \ CuCl}{6.02 \cdot 10^{23} \ molecules CuCl} )[/tex] = 3.42 × 10²³ atoms CuCl

  • molecules CuCl and molecules CuCl cancel out
  • left with atoms CuCl as final unit

Step 3: Check

We have 3 sig figs. Follow sig fig rules.

Since our answer already has the correct number of sig figs, there is no need to change it.

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