0
How much of a 37 percent formaldehyde solution should be put into 900 ml of water to make a 10 percent formaledhyde solution?
Wiki User
∙ 13y ago
If the percentages specified are by mass and the 900 ml of water are assumed to be at standard temperature and pressure, this problem can be solved as follows: The 900 ml of water will have a mass of 900 grams. Call the unknown mass of the 37 percent solution to be added m. this will contain 0.37m grams of formaldehyde and 0.63m grams of water, and 0.37m/(900 + m) = 0.10. Then, multiplying both sides by (m + 900), 0.37m = 0.10m + 90, or 0.27m = 90, or m = 3.3 X 102 grams of the 37 % solution to be added, to the justified number of significant digits.
Wiki User
∙ 13y ago
To make a 10% formaldehyde solution, we first need to find out how much pure formaldehyde is in the 37% solution. Then, we can set up a proportion to determine how much of the 37% solution must be used. First, calculate the amount of pure formaldehyde in the 37% solution (37% of x = amount of pure formaldehyde). Then, set up the proportion: (amount of pure formaldehyde in 37% solution) / (total volume of 10% solution) = 10%. Solve for the amount of 37% solution needed.
Add your answer:
Earn +20 pts
How does Formaldehyde harm the environment?
Formaldehyde can harm the environment by contributing to air pollution when released from industrial sources. It can also contaminate water sources when it is discharged into water bodies, affecting aquatic life. Additionally, formaldehyde can react with other pollutants in the atmosphere to form harmful secondary pollutants like ozone.
How much of water should be add to obtain a solution that is twenty percent antifreeze?
To obtain a solution that is twenty percent antifreeze, you would add 4 parts water to 1 part antifreeze. This means that for every 1 part of antifreeze, you would add 4 parts of water. This would result in a total of 5 parts of solution, with 1 part being antifreeze and 4 parts being water, achieving a solution that is twenty percent antifreeze.
How many milliliter of a 20 percent and a 65 percent solutions should you mix together to make 500 milliliter of a 45 percent solution?
Let x be the amount of the 20% solution and y be the amount of the 65% solution. The total volume equation is: x + y = 500. The total amount of the solute equation is: 0.20x + 0.65y = 0.45(500). Solve these two equations to find the amounts of each solution needed.
A solution of 30 percent acid and a solution of 60 percent acid are to be mixed to produce 50 liters of 57 percent acid How many liters of each solution should be used?
Let x be the liters of the 30% acid solution and y be the liters of the 60% acid solution. We can set up a system of equations: x + y = 50 (total liters) and 0.3x + 0.6y = 0.57*50 (acid content). Solving this system of equations, we find that x = 20 liters of the 30% acid solution and y = 30 liters of the 60% acid solution.
How much water should be mixed with 2 gallons of a 50 percent acid solution in order to get an 2 percent acid solution?
To get a 2% acid solution, you need to dilute the 50% acid solution with water. Since the final volume is 2 gallons, you will need to mix 2 gallons of water with the 2 gallons of 50% acid solution to get a 2% acid solution.
When preserving a cane toad how should you leave it in 5 percent formaldehyde?
Leave the toad in a jar of 5% formaldehyde forever. Be sure to label the jar as containing 5% formaldehyde, because it is toxic.
How much 50 percent antifreeze solution and 40 percent antifreeze solution should be combined to give 50 gallons of 46 percent antifreeze solution?
How much 50 percent antifreeze solution and 40 percent antifreeze solution should be combined to give 50 gallons of 46 percent antifreeze solution?
How much of a ten percent solution should be added to two cups of twenty percent solution to make a twelve percent solution?
2%
How many liters of a 20 percent solution of acid should be added to 10 liters of a 30 percent solution of acid to obtain a 25 percent solution?
10 liters.
Does formaldehyde sterilize?
No. Formaldehyde is commonly used as an embalming agent. You should NEVER use formaldehyde as a sterilizer, as the chemicals are toxic to humans and animals.
How long after fish are treated with formaldehyde can they be consumed?
Not at all! Formaldehyde is toxic and foods exposed to it should not be eaten.
A 280 mL solution is 20 percent salt How much water should be added to make the solution 14 percent salt?
98 mL
If you have a 300ml of a 15 percent hydrochloric acid solution in dilute the solution to 1000ml with sterile water what percent should appear on the label?
The final concentration of the hydrochloric acid solution would be 5% after dilution. Therefore, the label should indicate that the solution is a 5% hydrochloric acid solution.
How many ml should be added to 100ml of a 25 percent solution to get produce a 20 percent solution?
add 25ml more of solution x * 20 = 100 * 25 x = 25
How much pure acid should be mixed with 5 gallons of 70 percent acid solution in order to get a 90 percent acid solution?
x=45
A chemist has one solution which is 50 percent acid and a second solution which is 25 percent acid how much of each should be mixed to make a 10 liters of a 40 percent acid solution?
6 litres of 50% + 4 litres of 25%
How much pure acid should be mixed with 2 gallons of a 50 percent acid solution in order to get an 80 percent acid solution?
pH less than 7
