Explanation:
It is known that number of moles is equal to mass divided by molar mass of the compound or substance.
Mathematically, No. of moles = [tex]\frac{mass}{\text{molar mass}}[/tex]
Since, it is given that mass is 10 g and molar mass of ethanol is 46.07 g/mol.
Hence, calculate the number of moles of ethanol as follows.
No. of moles = [tex]\frac{mass}{\text{molar mass}}[/tex]
= [tex]\frac{10 g}{46.07}[/tex]
= 0.217 mol
Thus, we can conclude that there are 0.217 moles of ethanol are present in a 10.0 g sample of ethanol.
