Given:
Quantity of rubbing alcohol = 400 grams
To find:
The number of moles in 400 grams of rubbing alcohol
Solution:
Isopropyl alcohol is also known as rubbing alcohol. The molecular formula for Isopropyl Alcohol is [tex]C_3H_8O[/tex].
Molar mass of [tex]C_3H_8O[/tex] = 60.09502 g/mol. That is there is grams of isopropyl alcohol in 1 mole.
There would be, [tex]\Rightarrow\frac{400}{60.09502}=6.65612558245 \text{moles}[/tex]
Therefore, there are 6.65612558245 moles in 400 grams of rubbing alcohol.