When 5.0 g of salt are added to a sample of pure water, the resulting concentration...
When 5.0 g of salt are added to a sample of pure water, the resulting concentration is 15 %. Calculate the mass of pure water used.
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When 5.0 g of salt are added to a sample of pure water, the
resulting concentration...
References A 2.00 g sample of KCI is dissolved in 65.0 mL. of water. The resulting solution is then added to 15.0 m...
References A 2.00 g sample of KCI is dissolved in 65.0 mL. of water. The resulting solution is then added to 15.0 mL. of a 0.430 M CaCl, (aq) solution. Assuming that the volumes are additive, calculate the concentrations of each ion present in the final solution. Concentration of K ions M Concentration of Ca ions Concentration of CI ions M Submit Answer Try Another Version 6 item attempts remaining
A 12.34 mL solution with an unknown salt concentration had a mass of 10.25 g. When...
A 12.34 mL solution with an unknown salt concentration had a mass of 10.25 g. When the water was evaporated from the solution. 4.78 g of NaCl remained. a Calculate the mass-mass percent NaCl concentration in the solution. Show your work. b Calculate the mass-volume percent NaCl concentration in the solution. Show your work. Calculate the molarity of NaCl in the solution. Show your work.
Question 1. A 2.700×10−2M solution of NaCl in water is at 20.0∘C. The sample was created...
Question 1. A 2.700×10−2M solution of NaCl in water is at 20.0∘C. The sample was created by dissolving a sample of NaCl in water and then bringing the volume up to 1.000 L. It was determined that the volume of water needed to do this was 999.3 mL . The density of water at 20.0∘C is 0.9982 g/mL. a.)Calculate the molality of the salt solution. B.) Calculate the mole fraction of salt in this solution. C.) Calculate the concentration of...
A tank initially contains 120 L of pure water. A salt mixture containing a concentration of...
A tank initially contains 120 L of pure water. A salt mixture containing a concentration of 1.5 g/L enters the tank at a rate of 2 L/min, and the well-stirred mixture leaves the tank at the same rate. Find an expression for the amount of salt in the tank at any time t. Also, find the limiting amount of salt in the tank as t +0. (10 points)
Find the mass of the salt in the tank after t min. When will the concentration...
Find the mass of the salt in the tank after t min.
When will the concentration of the salt in the tank reach 0.2
kg/L?
A brine solution of salt flows at a constant rate of 6 L/min into a large tank that initially held 100 L of pure water. The solution inside the tank is kept well stirred and flows out of the tank at a rate of 5 L/min. If the concentration of salt in the brine entering...
A 1.944 g sample of N-2-acetamido-2-aminoethane-sulfonic acid potassium salt (ACES-K+, MW = 220.29 g/mol) is dissolved...
A 1.944 g sample of N-2-acetamido-2-aminoethane-sulfonic acid potassium salt (ACES-K+, MW = 220.29 g/mol) is dissolved in 52.38 mL of water. To the solution, 27.66 mL of HCl is added, resulting in a pH of 6.95. Calculate the concentration of the HCl solution. The pK, of ACES is 6.85. (HCI) = 3.80 x10-6
5.0 g of solid Al(NO3)3 was added to enough water to make a 100.0 mL solution....
5.0 g of solid Al(NO3)3 was added to enough water to make a 100.0 mL solution. Al(NO3)3 is very soluble in water. 1. Write out the dissolution reaction that occurs when the solid Al(NO3)3 was added to water. 2. What is the concentration, in Molarity, of Al(NO3)3 once it is dissolved in the water? 3. If 53 mL of water was added to the original Al(NO3)3 solution described above, what is the new concentration in Molarity? 4. What is the...
You have a 5.0 ml sample of a protein in 0.5M NaCI. You place the protein/salt...
You have a 5.0 ml sample of a protein in 0.5M NaCI. You place the protein/salt sample inside dialysis tubing and place the bag in a large beaker of distilled water. Your goal is to remove as much NaCI from the sample as possible. Since you know that the final salt concentration will be the same inside the tubing as out, you can calculate the final concentration of the salt. If you decide to place the dialysis bag in 4.0...
4 A 12.34 mL solution with an unknown salt concentration had a mass of 10.25 g....
4 A 12.34 mL solution with an unknown salt concentration had a mass of 10.25 g. When the water was evaporated from the solution, 4.78 g of NaCI remained. a Calculate the mass-mass percent NaCi concentration in the solution. Show your work b Calculate the mass-volume percent NaCl concentration in the solution. Show your work. c Calculate the molarity of NaCI in the solution. Show your work.
A 1.42 g sample of a pure compound, with formula M_2SO_4, was dissolved in water and...
A 1.42 g sample of a pure compound, with formula M_2SO_4, was dissolved in water and treated with an excess of aqueous barium chloride, resulting in the precipitation of all the sulfate ion as barium sulfate. The precipitate was collected, dried, and found to weigh 2.3.3 g. Determine the atomic mass of M, and identify M.
References A 2.00 g sample of KCI is dissolved in 65.0 mL. of water. The resulting solution is then added to 15.0 mL. of a 0.430 M CaCl, (aq) solution. Assuming that the volumes are additive, calculate the concentrations of each ion present in the final solution. Concentration of K ions M Concentration of Ca ions Concentration of CI ions M Submit Answer Try Another Version 6 item attempts remaining
A 12.34 mL solution with an unknown salt concentration had a mass of 10.25 g. When the water was evaporated from the solution. 4.78 g of NaCl remained. a Calculate the mass-mass percent NaCl concentration in the solution. Show your work. b Calculate the mass-volume percent NaCl concentration in the solution. Show your work. Calculate the molarity of NaCl in the solution. Show your work.
A tank initially contains 120 L of pure water. A salt mixture containing a concentration of 1.5 g/L enters the tank at a rate of 2 L/min, and the well-stirred mixture leaves the tank at the same rate. Find an expression for the amount of salt in the tank at any time t. Also, find the limiting amount of salt in the tank as t +0. (10 points)
Find the mass of the salt in the tank after t min.
When will the concentration of the salt in the tank reach 0.2
kg/L?
A brine solution of salt flows at a constant rate of 6 L/min into a large tank that initially held 100 L of pure water. The solution inside the tank is kept well stirred and flows out of the tank at a rate of 5 L/min. If the concentration of salt in the brine entering...
A 1.944 g sample of N-2-acetamido-2-aminoethane-sulfonic acid potassium salt (ACES-K+, MW = 220.29 g/mol) is dissolved in 52.38 mL of water. To the solution, 27.66 mL of HCl is added, resulting in a pH of 6.95. Calculate the concentration of the HCl solution. The pK, of ACES is 6.85. (HCI) = 3.80 x10-6
You have a 5.0 ml sample of a protein in 0.5M NaCI. You place the protein/salt sample inside dialysis tubing and place the bag in a large beaker of distilled water. Your goal is to remove as much NaCI from the sample as possible. Since you know that the final salt concentration will be the same inside the tubing as out, you can calculate the final concentration of the salt. If you decide to place the dialysis bag in 4.0...
4 A 12.34 mL solution with an unknown salt concentration had a mass of 10.25 g. When the water was evaporated from the solution, 4.78 g of NaCI remained. a Calculate the mass-mass percent NaCi concentration in the solution. Show your work b Calculate the mass-volume percent NaCl concentration in the solution. Show your work. c Calculate the molarity of NaCI in the solution. Show your work.
A 1.42 g sample of a pure compound, with formula M_2SO_4, was dissolved in water and treated with an excess of aqueous barium chloride, resulting in the precipitation of all the sulfate ion as barium sulfate. The precipitate was collected, dried, and found to weigh 2.3.3 g. Determine the atomic mass of M, and identify M.
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