Asurgeon needs 9 liters of a 3% saline solution. she has a 1% solution and a 10% solution available. how many liters of the 1% solution and how many liters of the 10% solution should she mix to make the 3% solution?

7 L of the 1% solution and 2 L of the 10% solution should she mix to make the 9 L of  3% solution.

Explanation:

Let the volume of 1% solution be mixed to make 3% solution= a L

Let the volume of 10% solution be mixed to make 3% solution= b L

Given , Volume of  3% solution = 9 L

Thus, a + b = 9 1

Also,

Applying C₁V₁ + C₂V₂ = C₃V₃

Where,

C₁ is the concentration of the 1% liquid

C₂ is the concentration of the 10% liquid

C₃ is the concentration of the 3% liquid

V₁ is the volume of the 1% liquid (a L)

V₂ is the volume of the 10% liquid (b L)

V₃  is the volume of the 3% liquid (9 L)

So,

1×a + 10×b = 9×3

a + 10b = 27  2

Solving equation 1 and 2 , we get:

a = 7 L and b = 2 L

Thus, 7 L of the 1% solution and 2 L of the 10% solution should she mix to make the 3% solution.

the answer is: they rebelled against saddam hussein’s rule.

kurds opposed saddam rule and wanted independence. kurds in the north and shiites in the south revolt against hussein.

for example, the halabja attack in 1988 conducted against the kurdish people by the iraqi regime under saddam hussein, where between 4000 people are killed and around 9000 are injured.