Question

Convert 5.0 mol Si to grams

Answer 1

140g/mol

Explanations:

The mass of silicon is expressed according to the formula:

`Mass\text{ of Silicon}=moles* molar\text{ mass}`

Given the following parameters

• Moles of silicon = 5.0moles

,

• Molar mass of silicon = 28g/mol

Substitute the given parameters into the formula

`\begin{gathered} Mass\text{ of silicon}=5.0moles*(28g)/(mol) \\ Mass\text{ of silicon}=140g\text{/}mol \end{gathered}`

Hence the mass of silicon is 140g/mol