Question

How many atoms are in 56 grams of silicon?

Answer 1

Answer:

$atoms=1.2x10^{24}atomsSi$

Explanation:

Hello there!

In this case, by considering the mass-mole-particles relationships, it is possible to compute the atoms of silicon by firstly computing the moles via its atomic mass (28.1 g/mol):

$mol=56gSi*\frac{1molSi}{28.1gSi} =2.0molSi$

Next, via the Avogadro's number, we can compute the atoms of silicon:

$atoms=2.0gSi*\frac{6.022x10^{23}atomsSi}{1molSi}\\\\atoms=1.2x10^{24}atomsSi$

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