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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
How much water needs to be added to a 5g vial of drug powder to make a 2.5 percent solution?
195 grams.
How do I produce a 4 percent citric acid solution using 50 percent citric acid powder and distilled water?
To produce a 4% citric acid solution, you can mix 1 part of 50% citric acid powder with 11 parts of distilled water. For example, mix 1 mL of the citric acid powder with 11 mL of distilled water. This will give you a total of 12 mL of 4% citric acid solution.
How much water must be added to 40 ml of a 25 percent by weight solution to make a 2 percent by weight solution?
About 80ml of water must be added to 40ml of a 25 percent by weight solution to make a 2 percent by weight solution.
How do you make a 9 percent saline solution?
To make a 9 percent saline solution, start by preparing a 100 percent salt solution. With a bottle of 100 percent salt water, take 9 percent and dilute with distilled water to make a 9 percent saline solution.
How do make borax powder to liquid borax?
To make liquid borax, you can dissolve borax powder in hot water. Mix until the powder is fully dissolved and the solution becomes clear. Allow the solution to cool before using it.
How can I make a homogeneous solution of aluminum acetate?
To make a homogeneous solution of aluminum acetate, you can dissolve aluminum acetate powder in water while stirring continuously. Gradually adding the powder to the water and mixing well will help to ensure a uniform distribution of the compound throughout the solution. Additionally, heating the water can help to dissolve the powder more effectively, resulting in a homogeneous solution.
How do you make phenolphthalein indicator for titration from powder?
To make phenolphthalein indicator solution from powder, dissolve a small amount of phenolphthalein powder (about 0.1g) in 100mL of ethanol or 95% ethanol and 5% water solution. Stir the mixture until the powder is completely dissolved. This will give you a pink indicator solution suitable for titrations.
How do I make a 5 percent bleach solution from a 6 percent bleach solution?
You dillute it with some more of the same solvent used for the 6 percent solution - pressumably water.
How much calcium hypochlorite powder at 65 percent strength is needed to make 200 liters of 2 percent hypochlorite solution?
You would need 6.15 kg of calcium hypochlorite powder at 65% strength to make 200 liters of 2% hypochlorite solution.
How many liters of 93 percent acid solution are needed to make a 9 percent solution with 50 liters of water?
4.84
How much water must be added to 40ml of a 25 percent by weight solution to make a 2 percent by weight solution?
To make a 2% solution from a 25% solution, you need to dilute it. Let x ml be the amount of water needed. Using the equation for mass balance: 0.25(40) = 0.02(40 + x), solve for x to find that x = 875 ml of water needs to be added.
How to prepare 30 percent stock BSA from power form?
Well to make 30% stock solution of BSA from powder form you need to dissolve 30g of BSA into 100ml of solvent (water). Thus dissolved solution becomes 30% (w/v) stock solution.
