# How moles of silicon in a 10*g mass of same?

May 3, 2017

I take it you want the $\text{number of moles}$ of element in a $10 \cdot g$ mass....

#### Explanation:

$\text{Moles of stuff"="Mass"/"Molar Mass}$

And for this problem,

"Moles of silicon"=(10*g)/(32.1*g*mol^-1)=??*mol??

From where did I get the molar mass of silicon?