Respuesta :
Answer: 18.8 g
Explanation:
To find the mass of a 23.8 mL sample, all we have to do is set up a proportion.
[tex]\frac{0.791g}{mL} =\frac{x}{23.8mL}[/tex]
[tex]18.8358=x[/tex]
x=18.8 g
We round to 18.8 because of significant figures.
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:
[tex]density= \frac{mass}{volume}[/tex]
In this case:
- density= 0.791 [tex]\frac{g}{mL}[/tex]
- mass= ?
- volume= 23.8 mL
Replacing in the definition of density:
[tex]0.791 \frac{g}{mL} = \frac{mass}{23.8 mL}[/tex]
Solving:
mass= 0.791 [tex]\frac{g}{mL}[/tex]× 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:
- brainly.com/question/952755?referrer=searchResults
- brainly.com/question/1462554?referrer=searchResults