deedy9587 deedy9587
  • 22-06-2022
  • Mathematics
contestada

Chemist needs to mix 20% acid solution with a 70% acid solution to obtain the 8 liters 50% many liters do you

Respuesta :

Sadchocolate06
Sadchocolate06 Sadchocolate06
  • 22-06-2022

Answer:

There are 3.2 liters of the 20% solution to be mixed with 4.8 liters of the 70% solution.

Step-by-step explanation:

x = liters of 20% acid solution

y = liters of 70% acid solution

x + y = 8    This represents the total number of liters

and

.2x + .7y = .5(8)   This represents the concentration of the solution

Since x+y=8, y = 8-x

We can use substitution.

.2x + .7(8-x) = 4

.2x + 5.6 - .7x = 4

Combining like terms

-0.5x = - 1.6

Dividing by -0.5

x = 3.2

Answer Link

Otras preguntas

6010 males did a survey and 59.7% choose vanilla how many choose chocolate
3/14 of 10/9 = 5/21 is this right??
how do you factorise 7x+28
A right prism has square bases with edges that are three times as long as the lateral edges. The prism's total area is 750 m squared. Find the volume.
A rectangle's length is three times its width.  Let w denote the rectangle's width.  What polynomial represents the rectangle's area?
How much force is needed to move a box to an acceleration of 1.5 m/s^2 and a mass of 50 kg?
simplify [tex] \sqrt{49/4} [/tex]
What Is the Connection Between the Digestive System and Urinary System?
What did John Mitchell tell the Senate about Richard Nixon?
What does "Cherry Picking" Mean?