A beaker contains 0.50 moles of potassium bromide dissolved to a total volume of 600.0 mL....
A beaker contains 0.50 moles of potassium bromide dissolved to a total volume of 600.0 mL. How many moles of potassium bromide are in the beaker if 600.0 mL of water is added to the flask?
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A beaker contains 0.50 moles of potassium bromide dissolved to a
total volume of 600.0 mL....
19. a. What mass of potassium bromide is needed to prepare a 250. mL of a...
19. a. What mass of potassium bromide is needed to prepare a 250. mL of a 2.00 M KBr aqueous solution? Molar mass of KBr = 119.00 g/mol. Use dimensional analysis to calculate the mass. b. Describe the full process of how you would prepare this solution in a 250. mL volumetric flask. c. Calculate the concentration of the solution in question a. if more water was added to bring the solution to a final volume of 1000. mL. (Hint:...
A buffer solution contains 0.459 M ammonium bromide and 0.226 M ammonia. If 0.0482 moles of...
A buffer solution contains 0.459 M ammonium bromide and 0.226 M ammonia. If 0.0482 moles of potassium hydroxide are added to 225 mL of this buffer, what is the pH of the resulting solution? (Assume that the volume change does not change upon adding potassium hydroxide) H=
0.6573 g of potassium iodate is dissolved and diluted to a volume of 100.0 mL. Then...
0.6573 g of potassium iodate is dissolved and diluted to a volume of 100.0 mL. Then 25.00 mL of this stock solution is pipetted into a 100.0 mL volumetric flask which is filled to the mark with water. What is the concentration of the final standard solution in mol/L? Include units in your answer, and round the final answer to the correct number of significant figures.
How many grams of potassium bromide are needed to prepare 300.0 mL of a solution that...
How many grams of potassium bromide are needed to prepare 300.0 mL of a solution that is 2.0%w/v? Do NOT include any units, just answer with the NUMBER of grams, for example: 4.2 or 13 or 220. Type your response What is the new concentration, if solvent is added to 20.0 mL of a solution that is 4.0%w/v, until the total volume of the solution is 100.0 mL? (DO NOT include any units with your answer.) Type your response 25...
A chemist prepares a solution of potassium bromide (KBr) by measuring out 0.50 g of KBr...
A chemist prepares a solution of potassium bromide (KBr) by measuring out 0.50 g of KBr into a 250. mL volumetric flask and filling to the mark with distilled water. Calculate the molarity of Br anions in the chemist's solution. Be sure your answer is rounded to 2 significant digits. mol x s ?
In the laboratory, a student adds 19.3 g of potassium acetate to a 125 mL volumetric...
In the laboratory, a student adds 19.3 g of potassium acetate to a 125 mL volumetric flask and adds water to the mark on the neck of the flask. Calculate the concentration in mol/L) of potassium acetate, the potassium ion and the acetate ion in the solution [KCH3COO) - [K] [CH3C00] = 1 A student wishes to prepare 300-ml of a 0.236 M iron(III) acetate solution using solid iron(III) acetate, a 300-ml volumetric flask, and deionized water (a) How many...
Suppose 0.112 g of zinc bromide is dissolved in 100. mL. of a 27.0 mM aqueous solution of potassium carbonate
Suppose 0.112 g of zinc bromide is dissolved in 100. mL. of a 27.0 mM aqueous solution of potassium carbonate. Calculate the final molarity of bromide anion in the solution. You can assume the volume of the solution doesn't change when the zinc bromide is dissolved in it. Be sure your answer has the correct number of significant digits.
6.52 grams of sodium hydrogen carbonate is weighed into a 150 ml beaker and dissolved in 100 ml of deionized water. The...
6.52 grams of sodium hydrogen carbonate is weighed into a 150 ml beaker and dissolved in 100 ml of deionized water. The solution is then quantitatively transfer to a 250.0 mL volumetric flask and filled to the line with deionized water. What is the molarity of hydrogen carbonate in the volumetric flask?
qestOn How many moles of potassium hydroxide would have to be added to 225 mL of...
qestOn How many moles of potassium hydroxide would have to be added to 225 mL of a 0.325 M hydrofluoric acid solution, in order to prepare a buffer with a pH of 3.060? moles An aqueous solution contains 0.428 M hypochlorous acid. How many mL of 0.292 M sodium hydroxide would have to be added to 150 mL of this solution in order to prepare a buffer witha pH of 7.140? mL
Using molarity to find solute moles and solution volume Jordy A chemist adds 45.0 ml. of...
Using molarity to find solute moles and solution volume Jordy A chemist adds 45.0 ml. of a 1.2M iron(1) bromide (Fele) solution to a reaction flask. Calculate the millimoles of Iron(II) bromide the chemist has added to the flask. Round your answer to 2 significant digits. X d.
19. a. What mass of potassium bromide is needed to prepare a 250. mL of a 2.00 M KBr aqueous solution? Molar mass of KBr = 119.00 g/mol. Use dimensional analysis to calculate the mass. b. Describe the full process of how you would prepare this solution in a 250. mL volumetric flask. c. Calculate the concentration of the solution in question a. if more water was added to bring the solution to a final volume of 1000. mL. (Hint:...
A buffer solution contains 0.459 M ammonium bromide and 0.226 M ammonia. If 0.0482 moles of potassium hydroxide are added to 225 mL of this buffer, what is the pH of the resulting solution? (Assume that the volume change does not change upon adding potassium hydroxide) H=
How many grams of potassium bromide are needed to prepare 300.0 mL of a solution that is 2.0%w/v? Do NOT include any units, just answer with the NUMBER of grams, for example: 4.2 or 13 or 220. Type your response What is the new concentration, if solvent is added to 20.0 mL of a solution that is 4.0%w/v, until the total volume of the solution is 100.0 mL? (DO NOT include any units with your answer.) Type your response 25...
A chemist prepares a solution of potassium bromide (KBr) by measuring out 0.50 g of KBr into a 250. mL volumetric flask and filling to the mark with distilled water. Calculate the molarity of Br anions in the chemist's solution. Be sure your answer is rounded to 2 significant digits. mol x s ?
In the laboratory, a student adds 19.3 g of potassium acetate to a 125 mL volumetric flask and adds water to the mark on the neck of the flask. Calculate the concentration in mol/L) of potassium acetate, the potassium ion and the acetate ion in the solution [KCH3COO) - [K] [CH3C00] = 1 A student wishes to prepare 300-ml of a 0.236 M iron(III) acetate solution using solid iron(III) acetate, a 300-ml volumetric flask, and deionized water (a) How many...
qestOn How many moles of potassium hydroxide would have to be added to 225 mL of a 0.325 M hydrofluoric acid solution, in order to prepare a buffer with a pH of 3.060? moles An aqueous solution contains 0.428 M hypochlorous acid. How many mL of 0.292 M sodium hydroxide would have to be added to 150 mL of this solution in order to prepare a buffer witha pH of 7.140? mL
Using molarity to find solute moles and solution volume Jordy A chemist adds 45.0 ml. of a 1.2M iron(1) bromide (Fele) solution to a reaction flask. Calculate the millimoles of Iron(II) bromide the chemist has added to the flask. Round your answer to 2 significant digits. X d.
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