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How to prepare 250ml of a 2m solution of potassium chloride?
To prepare 250ml of a 2M potassium chloride solution, measure out 17.8g of potassium chloride and dissolve it in water to make a total volume of 250ml. Make sure to stir the solution well to ensure the potassium chloride is completely dissolved. Then, adjust the final volume to exactly 250ml by adding more water if needed.
What is the molarity of 80g NaOH dissolved in 1L of water?
To find the molarity, we first need to calculate the number of moles of NaOH. The molar mass of NaOH is 40 g/mol (sodium=23g/mol, oxygen=16g/mol, hydrogen=1g/mol). Thus, 80g NaOH is 2 moles (80g / 40g/mol). Given 1L of solution, the molarity is 2 moles / 1 L = 2 M.
How many grams of calcium chloride will you add to 250mL of water to make a 0.236 M solution?
Molarity is moles of solute / liters of solvent. Plugging in the data: 0.236M = x / 0.250L; x = (0.236M)(0.250L) = 0.0590 moles of CaCl2. The molecular weight of CaCl2 is 40.1 + 2(35.5) = 111.1 g / mole. The mass of CaCl2 = (MW)(moles) = (111.1g/mole)(0.0590moles) = 6.55g
What is the molarity of 25.0 mL of 3.50 M HNO3 diluted to 0.250L?
30 ml diluted to 250ml. 3.5 molar divided by 250 is 0.014. This multiplied by 30 is 0.42 molar.
What volume of air is contained in an empty 250ml aluminum can?
Gases are compressible so the actual volume is not possible to determine. Except if it is not compressed at all then it is 250ml.
How to prepare 250ml of a 2m solution of potassium chloride?
To prepare 250ml of a 2M potassium chloride solution, measure out 17.8g of potassium chloride and dissolve it in water to make a total volume of 250ml. Make sure to stir the solution well to ensure the potassium chloride is completely dissolved. Then, adjust the final volume to exactly 250ml by adding more water if needed.
What is the molarity of 80g NaOH dissolved in 1L of water?
To find the molarity, we first need to calculate the number of moles of NaOH. The molar mass of NaOH is 40 g/mol (sodium=23g/mol, oxygen=16g/mol, hydrogen=1g/mol). Thus, 80g NaOH is 2 moles (80g / 40g/mol). Given 1L of solution, the molarity is 2 moles / 1 L = 2 M.
If 6.73g of Na2CO3 is dissolved in enough water to make 250ml of solution what is the molarity of the sodium carbonate what are the molar concentrations of the Na plus and CO32- ions?
To find the molarity of the Na2CO3 solution, first convert grams to moles using the molar mass of Na2CO3 (105.99 g/mol). Calculate the number of moles in 6.73g, then divide by the volume in liters (0.25 L) to get the molarity. Since each Na2CO3 molecule gives 2 Na+ ions and 1 CO32- ion when dissolved, the molar concentration of Na+ ions would be twice the molarity calculated, and the molar concentration of CO32- ions would be equal to the molarity.
How many grams of calcium chloride will you add to 250mL of water to make a 0.236 M solution?
Molarity is moles of solute / liters of solvent. Plugging in the data: 0.236M = x / 0.250L; x = (0.236M)(0.250L) = 0.0590 moles of CaCl2. The molecular weight of CaCl2 is 40.1 + 2(35.5) = 111.1 g / mole. The mass of CaCl2 = (MW)(moles) = (111.1g/mole)(0.0590moles) = 6.55g
When you add 5ml of sugar to 250ml of coffee the volume is still 250ml?
The addition of 5ml of sugar to 250ml of coffee should increase the total volume to 255ml, not remain at 250ml. Mixing two substances typically leads to an increase in total volume due to the added volume of the sugar.
What is the molarity of 25.0 mL of 3.50 M HNO3 diluted to 0.250L?
30 ml diluted to 250ml. 3.5 molar divided by 250 is 0.014. This multiplied by 30 is 0.42 molar.
What is made by adding 4.5 moles of NH3 to 250ml of water.what is the molarity?
Adding 4.5 moles of NH3 to 250 mL of water will result in a solution with a volume slightly greater than 250 mL. To calculate the molarity, you need to know the final volume of the solution. Once you have the final volume, you can use the formula: Molarity = moles of solute / liters of solution.
How much is 250 ml of milk?
250ml of milk = 250ml of milk 250ml of milk = roughly 256g of milk 250ml of milk = roughly 1 cup plus 2/3 of a tablespoon
How many 250ml in 1.89 liter?
There are 7.56 250ml units in 1.89 liters.
What is 100GRAMS divided by 250ML?
0.4
Is 1 mesuring cup 250ml?
It varies from 226 to 250ml.
What is the number of moles of solute in 250 mL of a 0.4M solutionon centration?
1 mole in 250 ml and 4 moles in 1 liter or 1000 mls
