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Earn +20 ptsQ: How do you make a 2 percent solution of powder in water?
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How much water needs to be added to a 5g vial of drug powder to make a 2.5 percent solution?
195 grams.
How many liters of 93 percent acid solution are needed to make a 9 percent solution with 50 liters of water?
4.84
A 280 mL solution is 20 percent salt How much water should be added to make the solution 14 percent salt?
98 mL
How do you make a 1 percent solution from a 10 percent solution?
You would need to add water. The amount required is entirely dependent on how much volume you currently have. If the current volume is x then the question can be rewritten as: 10%x/(x+a) = 1% where a is the amount of water you need to add. Multiply both sides by x+a and you get 10%x = 1%x + 1%a Subtract 1%x from both sides and get 9%x = 1%a Divide by 1% and you get 9x = a Thus, to make a 1 percent solution from a 10 percent solution, you need to add 9 times the current volume of the solution in water.
A solution containing 30 percent insecticide is to be mixed with a solution containing 50 percent insecticide to make 200L of a solution containing 42 percent insecticide how much of the 50 percent in?
120liters
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