Question

28.1 g of silicon calculate the number of moles

Answer 1

Question:

• Calculate the number of moles in 28.1 g of silicon.

Solution:

Here, we have;

• Weight of silicon = 28.1 g

• Molecular weight of silicon = 28.1 g (28.0855 u)

We know that,

$\star \: {\underline{\boxed{\mathcal{\pmb{\quad Moles = \frac{Given \: weight}{Molecular \: weight} }}}}}$

Substituting values,

$\implies\sf{Moles = \frac{28.1}{28.1} } \\ \\ \implies\sf{Moles = \frac{\cancel{28.1}}{\cancel{28.1}}} \\ \\\implies\sf{Moles = 1}$

Hence,

• The number of moles in 28.1 g of silicon is 1 moles.