The solubilities of three salts in water are shown in the graph. 1000 Pb(NO,), 900 For each salt, determine how much will remain undissolved if 800 - 500 g is mixed into a liter of pure water at 40 °C. One K,Cr.O, 700 significant figure is sufficient in each answer. 600- 500- KCI 400- Pb(NO,),: 300 - 200 - 100 KCI: 10 20 30 40 50 60 70 80 90 100 Temperature (°C) Solubility (g/L)
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- Calculate the boiling point of a solution containing 12g glucose C6H12O6 dissolved in 200g of water H2O. (0.512°C - K of H-0) Answer: 100.17100After three minutes, the concentration of drug Zip in the red blood cells is 10 mmoles l-1. What is the average rate of entry of drug Zip into the red blood cells in units of moles min-1 red blood cell-1 during the first three minutes after placing the red blood cells into the bathing solution? Assume that each red blood cell occupies about 1 x 10-13 liters.When 2.43 g of a nonelectrolyte solute is dissolved in water to make 435 mL of solution at 25 °C, the solution exerts an osmotic pressure of 895 torr. What is the molar concentration of the solution? concentration: 0.045 M Incorrect How many moles of solute are in the solution? moles of solute: 0.034 mol Incorrect What is the molar mass of the solute? molar mass: 69.12 g/mol Incorrect
- Gout is caused by an error in metabolism that leads to abuildup of uric acid in body fluids, which is deposited as slightlysoluble sodium urate (C₅H₃N₄O₃Na) in the joints. If the extra-cellular [Na⁺] is 0.15 Mand the solubility of sodium urate is0.085 g/100. mL, what is the minimum urate ion concentration(abbreviated [Ur⁻]) that will cause a deposit of sodium urate?The glass electrode used in commercial pH meters gives an electrical response proportional to the concentration of hydrogen ion. To convert these responses to a pH reading, the electrode must be calibrated against standard solutions of known H+ concentration. Determine the weight in grams of sodium dihydrogen phosphate (NaH2PO4 · H2O; FW 138) and disodium hydrogen phosphate (Na2HPO4 ; FW 142) needed to prepare 1 L of a standard buffer at pH 7.00 with a total phosphate concentration of 0.100 M . See Problem 24 for the pKa values of phosphoric acid.Calculate the following concentration given this
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- A saline solution contains 1.00 g of NaCl (molar mass = 58.55 g/mol) in 75.8 mL of solution. Calculate the concentration of NaCl in this solution, in units of molarity. %3D Express the concentration in molarity to three significant figures. ? MSugar solution is being heated to 83 o C in a jacketed pan made from stainless steel, 1.6 mm thick. Heat is supplied by condensing steam at 200 kPa gauge in the jacket. Calculate the rate of heat transfer if the surface heat transfer coefficients for condensing steam and sugar solution are 12000 J/m2-s-oC and 3000 J/m2-s-oC, respectively. Thermal conductivity for the stainless steel is 21 J/m-s-oC and the surface area of the pan is 1.4 m 2 .A 35 mL of solution of hydrochloric acid is neutralized by 15 mL of 0.5 M potassium hydroxide. What is the concentration of hydrochloric acid? The balanced equation is HCI + KOH - H,O + KCI O 0.75 M O 0.25 M O 0.214 M O 0.786 M