0
To make a 3 Molar solution of potassium chloride in 250 milliliters:
- Calculate the mass of potassium chloride needed using its molar mass.
- Dissolve this mass of potassium chloride in a small amount of water, then add water to bring the total volume to 250 ml.
- Stir to ensure complete mixing and dissolve the potassium chloride completely.
What else can I help you with?
How many moles of potassium chloride are there in a 100.0g sample of potassium chloride?
To calculate the number of moles of potassium chloride in a 100.0g sample, you need to divide the mass of the sample by the molar mass of potassium chloride. The molar mass of potassium chloride is approximately 74.55 g/mol. Therefore, 100.0g ÷ 74.55 g/mol = approximately 1.34 moles of potassium chloride in the sample.
What two chemicals are used to make potassium chloride?
Two methods To a gas jar of chlorine gas add a very small pellet of potassium . 'Flash/bang' and the white powder is KCl(Potassium Chloride). 2K(s) + Cl2(g) = 2KCl(s) This method is NOT recommended unless under very controlled lab. conditions (fume cupboard and lab. technician available). To a solution of potassium hydroxide and a molar equation of hydrochloric acid. They neutralise to form a solution of potassium chloride. Whereupon evaporate the solution(water) to leave white crystals of potassium chloride. KOH(aq) + HCl(aq) = KCl(aq) + H2O(l) This is a safer, longer method of making potassium chloride.
If potassium has a mass of 39.1 amu and chloride has a mass of 35.45 amu which is the mass of potassium chloride when these two ions are combined?
The molar mass of potassium chloride is 74,5513.
How many moles are in 0.98 grams of Potassium chloride?
To determine the number of moles in 0.98 grams of Potassium chloride, you need to divide the given mass by the molar mass of Potassium chloride. The molar mass of KCl is approximately 74.55 g/mol. So, 0.98 grams / 74.55 g/mol ≈ 0.013 moles of KCl.
How many grams of potassium chloride are formed by the decomposition of excess potassium chlorate to yield 3.40 L of oxygen?
To determine the grams of potassium chloride formed, you first need to calculate the moles of oxygen produced by the decomposition of potassium chlorate. Then, use the stoichiometry of the balanced chemical equation to convert moles of oxygen to moles of potassium chloride. Finally, from the molar mass of potassium chloride, you can calculate the grams formed.
How many moles of potassium chloride are there in a 100.0g sample of potassium chloride?
To calculate the number of moles of potassium chloride in a 100.0g sample, you need to divide the mass of the sample by the molar mass of potassium chloride. The molar mass of potassium chloride is approximately 74.55 g/mol. Therefore, 100.0g ÷ 74.55 g/mol = approximately 1.34 moles of potassium chloride in the sample.
What two chemicals are used to make potassium chloride?
Two methods To a gas jar of chlorine gas add a very small pellet of potassium . 'Flash/bang' and the white powder is KCl(Potassium Chloride). 2K(s) + Cl2(g) = 2KCl(s) This method is NOT recommended unless under very controlled lab. conditions (fume cupboard and lab. technician available). To a solution of potassium hydroxide and a molar equation of hydrochloric acid. They neutralise to form a solution of potassium chloride. Whereupon evaporate the solution(water) to leave white crystals of potassium chloride. KOH(aq) + HCl(aq) = KCl(aq) + H2O(l) This is a safer, longer method of making potassium chloride.
Does KCI have the molar mass of 120.37?
No, KCI (potassium chloride) has a molar mass of approximately 74.55 g/mol.
What is the molarity of a solution that contains 93.5g of potassium chloride dissolved in 500ml of solution?
To find the molarity, you first need to calculate the number of moles of potassium chloride using its molar mass. Then, you can divide the number of moles by the volume of solution in liters to get the molarity. In this case, you would first convert 93.5g to moles, then divide by 0.5L to find the molarity.
If potassium has a mass of 39.1 amu and chloride has a mass of 35.45 amu which is the mass of potassium chloride when these two ions are combined?
The molar mass of potassium chloride is 74,5513.
How many grams of calcium chloride are needed to produce 10 g of potassium chloride?
To find the amount of calcium chloride needed, you would first need to determine the molar ratio between calcium chloride and potassium chloride in the chemical reaction. Then, you could use this ratio to calculate the amount of calcium chloride required to produce 10 g of potassium chloride. The molar ratio is 1:1, so the same amount of calcium chloride as potassium chloride, 10 g, would be needed.
How many moles are in 0.98 grams of Potassium chloride?
To determine the number of moles in 0.98 grams of Potassium chloride, you need to divide the given mass by the molar mass of Potassium chloride. The molar mass of KCl is approximately 74.55 g/mol. So, 0.98 grams / 74.55 g/mol ≈ 0.013 moles of KCl.
What is the density of 3 molar sodium hydroxide in grams per milliliter?
the molar mass of sodium hydroxide is 40g/mol mike
How many grams of potassium chloride are formed by the decomposition of excess potassium chlorate to yield 3.40 L of oxygen?
To determine the grams of potassium chloride formed, you first need to calculate the moles of oxygen produced by the decomposition of potassium chlorate. Then, use the stoichiometry of the balanced chemical equation to convert moles of oxygen to moles of potassium chloride. Finally, from the molar mass of potassium chloride, you can calculate the grams formed.
What is a solution whose pH is 4?
One such solution can be made by mixing 50 milliliters of 0.1 molar potassium hydrogen phthalate with 0.1 milliliter of 0.2 molar hydrochloric acid, then diluting this mixture to a total volume of 100 milliliters. This is from theHandbook of Chemistry and Physics, 66th Edition, page D-145. This is, of course, not the only correct answer to this question.
What is the molar heat of solution for ammonium nitrate and calcium chloride?
81.1 kj/mol
When 1 gram of zinc chloride ZnCl2 is dissolved in water the heat evolved is 0.53kJ Calculate the molar heat of substance of solution of zinc chloride?
To calculate the molar heat of solution of zinc chloride, we use the heat evolved by dissolving 1 gram of ZnCl2 in water. First, we convert the mass of ZnCl2 to moles using its molar mass of 136.3 g/mol. Then, we divide the heat evolved by the number of moles dissolved to get the molar heat of solution. In this case, the molar heat of solution would be 3.89 kJ/mol.
