Question

Calculate: Press Reset. Start with 1.900 × 10 24(or 19.00 × 10 23 ) molecules of Cu2O. A. Calculate the number of moles: B. Use the Gizmo to verify your calculation. Were you correct? C. Is the method for converting molecules to moles the same as that for atoms?

Answer 1

Answer:

1.661 mol.

Explanation:

Hello!

In this case, since the Avogadro's number allows us to relate the number of formula units in one mole of the substance; we need to keep in mind that elements are related by atoms and compounds by molecules, it means:

$1 mol = 6.022x10^{23}atoms\\\\1 mol = 6.022x10^{23}molecules$

Thus, for copper (I) oxide, we compute the moles, given the atoms as shown below:

$n = 1.900x10^{24}molecules*\frac{1mol}{ 6.022x10^{23}molecules} \\\\n = 1.661mol$

Thus, the method we use is the same.

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