contestada

Homework examples
1) An experiment requires a solution that is 80% methyl alcohol
by volume. What volume of methyl alcohol should be added to
200 mL of water to make this solution?

Respuesta :

Answer:

800 mL

Step-by-step explanation:

Let's say we add [tex]x[/tex] mL of methyl alcohol to the water.

Then the proportion of methyl alcohol in the solution would be [tex]\frac{x}{200+x}[/tex].

So we have

[tex]\frac{x}{x+200}=0.8\\\\x=0.8x+160\\\\0.2x=160\\\\x=800[/tex]

Otras preguntas