The density of methanol at 20 degree Celsius is 0.791 g/ml. What is the mass of a 23.8 ml sample of methanol?

Taking into account the definition of density, the mass of a 23.8 mL sample of methanol is 18.83 g.

But first you must know that density is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space.

Then, density is a quantity that allows us to measure the amount of mass in a certain volume of a substance. That is, it is the relationship between the weight (mass) of a substance and the volume it occupies.

Then, the expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:

In this case:

Replacing in the definition of density:

Solving:

mass= 0.791 × 23.8 mL

mass= 18.83 g

In conclusion, the mass of a 23.8 mL sample of methanol is 18.83 g.

Learn more about density:

18.8 g

Explanation:

To find the mass of a 23.8 mL sample, all we have to do is set up a proportion.

x=18.8 g

We round to 18.8 because of significant figures.