290 grams
530,3 g potassium iodide are needed.
A hypothesis is an "educated guess". An example of how it could be used: John needed to test his hypothesis about molecular degenaration.
The minerals found in food can be categorized into two groups; macrominerals, and trace minerals. Macrominerals are usually found in large quantities in food, and are required in larger quantities for the body. Trace minerals are found in small amounts in food, and are needed in smaller amounts in the diet. Macrominerals: Sodium, potassium, chloride, calcium, phosphorus, magnesium, sulfur. Trace minerals: Iron, zinc, iodide, selenium, copper, fluoride, chromium, molybdenum, manganese.
A saturated solution is made when you have added so much solute that no more dissolves. The amount of solute needed to make a saturated solution will change with the temperature of the solution.
The steps needed to find the solution are usually obvious in a what: an exerciseExercise
I suppose that this solution doesn't exist.
The leaf was rinsed in water to rehydrate it. Iodine solution is an aqueous solution of iodine/potassium iodine - potassium tri-iodide; water is needed inside the leaf to enable penetration by diffusion.
More than 45,5 g KNO3.
1.35 mole
2.07g
Usually there is no indicator needed in potassium permanganate titrations as there will be an excess of manganate ions in the conical flask, turning the solution from colourless to pale pink.
Usually there is no indicator needed in potassium permanganate titrations as there will be an excess of manganate ions in the conical flask, turning the solution from colourless to pale pink.
Sodium fluoride can be used as a preservative for blood samples (for the glucose determination) avoiding glycolysis.
Fluoride has been proven to increase the strength of bones and teeth, but there is little or no reason to believe that is needed for human life.
From the definition of molar concentration, the required amount of solute for the solution specified is 0.125 moles. The gram formula mass for potassium benzoate trihydrate is 214.26. Therefore, the mass required is 0.125 X 214.26 or about 26.8 grams, to the justified number of significant digits.
It can take 256 mg of Fluoride to make one bottle of toothpaste. Fluoride is added to toothpaste to disrupt the process of tooth decay.
Three Potassium Ions are needed to Bond with one Phosphate Ion.