Answer: 26.76%
Explanation:
A 100ml vial of 25% solution means that 25% of the total mass of the solution is the mass of the medication (solute).
Assuming a 100ml vial contains 100g of solution, then,
Mass of solute = 0.25 x 100g = 25g
For a 250ml solution, solute will be;
(250x25)/100 = 62.5g
Adding an additional 6g of medication makes it
62.5 + 6 = 68.5g
For a 250ml solution, the original mass is (250x100)/100 = 250g
With addition of 6g medication it becomes 256g
Solution after adding medication becomes 68.5/256 x 100%
= 26.76%
The passage listed above in my own words:
Ischemic strokes are the most common type of stroke. They occur when a blood vessel that leads to the brain becomes clogged usually by blood clots, which are clumps of blood that stick together. The blood sticks together in order to stop bleeding. However, they often form inappropriately inside an artery or vein , causing the blood flow to decrease and the blood can't get where it needs to be. Another reason for Ischemic strokes is because sometimes, arteries become narrow and clogged, usually with plaque, which is a mix of fatty stuff and cholesterol that stick to the walls of blood vessels.
Hope this helped! :)
