Question

How many moles of silicon, Si, are in 1.45 × 1024 Si atoms?

Answer 1

Atoms= (1.45x10^24)/(6.02x10^23)
I haven't got a calculator but that's how you work it out

Answer 2

`n_(Si)=2.41molSi`

Step-by-step explanation:

Hello,

In this case, one must use the atom-mole relationship given by the Avogadro's number as shown below, in order to compute the required moles:

`n_(Si)=1.45x10^(24)atomsSi*(1molSi)/(6.022x10^(23)atomsSi) \\n_(Si)=2.41molSi`

Best regards.