Question

One of the uses of methanol (CH3OH) in dilute form is as a windshield washer antifreeze. In pure form, methanol has a molar concentration of 24.7M. How many moles are contained in 500 mL of solution?

Answer 1

Mol of methanol =12.35

Further explanation

Mole itself is the number of particles contained in a substance

1 mole = 6.02.10²³ particles

Mole : the ratio of the amount of substance mass and its molar mass

$\large{\boxed{\boxed{\bold{mole=\frac{mass}{molar\:mass}}}}$

Molarity is a way to express the concentration of the solution

Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution

$\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}$

Molar concentration of methanol=24.7 M

Volume of solution = 500 ml = 0.5 L

$\tt mol=M\times V\\\\mol=24.7\times 0.5\\\\mol=12.35$