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4. Which will contain the greater number of moles of potassium ion: 30.0 mL of 0.15...
Just answer number 8 7. The average adult male has a total blood volume of 5.0L...
Just answer number 8
7. The average adult male has a total blood volume of 5.0L After drinking a few beers, he has a BAC[blood alcohol concentration) of 0.10. What mass of alcohol is circulating in his blood? 8. Antacids are often used to relieve pain and promote healing in the treatment of mild ulcers. Write balanced net ionic equations for the reactions between the HCl(ag) in the stomach and each of the following substances used in various antacids: a....
4- (a) Calculate the concentration of Cd2+ ion in a solution prepared by mixing 2.0 mL...
4- (a) Calculate the concentration of Cd2+ ion in a solution prepared by mixing 2.0 mL of 1 M CA(NO3)2 solution with 1.0 L of 4.0 M NH3 solution. [Assume that the volume does not change after the addition of 2.0 ml of 1 M Cd(NO3)2] (b) Will you be able to see Ca(OH)2(6) precipitate in the solution? (Kr for Ca(NH3)42+ = 1.0 x 107, Kb for NH3 = 1.8 x 10-5; Ksp for Ca(OH)2 = 5.9 x 10-15 Cd2+...
4.(16pts, min) Do either (a) or (b) (a) How many ml. of 0.0550M COH is needed...
4.(16pts, min) Do either (a) or (b) (a) How many ml. of 0.0550M COH is needed to titrate 16.30 mL of 0.0491 M Diproteid HX. The titration reaction is x + 2 COH - > C X + 2,0 (b) A 0.860 g sample containing Ag was treated Na Sia), to precipitate Ag Sio via - 2 Ag + 8 AS) If the precipitate of Ag S() weighed 0.138 g. what was the % Ag in the sample? Data: Atomic...
If the solubility of sodium chloride (NaCl) is 30.6 g/100 mL of H2O at a given...
If the solubility of sodium chloride (NaCl) is 30.6 g/100 mL of H2O at a given temperature, how many grams of NaCl can be dissolved in 250.0 mL of H2O? If the solubility of glucose (C6H12O6) is 120.3 g/100 mL of H2O at a given temperature, how many grams of C6H12O6 can be dissolved in 75.0 mL of H2O? Only 0.203 mL of C6H6 will dissolve in 100.000 mL of H2O. Assuming that the volumes are additive, find the volume/volume...
What is the pH n aqueous solution with a hydroxide ion concentration of 1.60 x 10-4...
What is the pH n aqueous solution with a hydroxide ion concentration of 1.60 x 10-4 M? O 14.2 03.80 O 10.2 0 -0.204 Consider the reaction. HF(aq) + KOH(aq) — KF(aq) + H20(1) What is the net ionic equation for the chemical reaction? HF(aq) + K+ (aq) + OH(aq) — K+(aq) + F-(aq) + H+(1) + OH-(1 HF(aq) + K+ (aq) —> K+ (aq) + H2O(l) HF(aq) + K+(aq) + OH- (aq) — K+(aq) +F-(aq) + H2O(1) HF(aq) +...
Feedback Given that Kb 4.4x10-4 for methylamine exactly 650 mL of a buffer solution which has...
Feedback Given that Kb 4.4x10-4 for methylamine exactly 650 mL of a buffer solution which has a pH of 10.84 and a final methylammonium chloride salt concentration [CHyNH,]-0.100 M, one would need to use (mass) of CH3NH3CI(s) Tries 0/S and (volume) of 3.00 M sodium hydroxide solution, plus enough water to make up the total volume. Answer Tries 0/5 Post Discussion Send Feed
A chemistry teacher needs to make 2.30 L of a potassium chloride solution for an experimen...
A chemistry teacher needs to make 2.30 L of a potassium chloride solution for an experimen The concentration of the required solution is 3.10 M. How many grams of KCI will she need to use? 0 7.13 g KCI 0 231 g KCI O 532 g KCI 0.0956 g KCI What is the equation for the ion product constant of water at 25 °C? Kw [H,0+][OH-] [H,O] = 1.00 x 10-14 Kw [H,0+1 [OH-] = 1.00 x 10-14 Kw =...
71. A solution of nitric acid has a density of 1.5 g/mL and is 20% by...
71. A solution of nitric acid has a density of 1.5 g/mL and is 20% by weight HNO3. a. What is the molarity of this solution of HNO;? b. What volume of this solution should be taken in order to prepare of 5.0 L of a solution of 0.15 M nitric acid by dilution with water? In order to obtain a precise concentration, the 0.15 M HNO solution is standardized against pure Hgo (molar mass = 216.59 g/mol) by titrating...
A student weighs out 14.6 g of AlBrz, transfers it to a 300 mL volumetric flask,...
A student weighs out 14.6 g of AlBrz, transfers it to a 300 mL volumetric flask, adds enough water to dissolve the solid and then adds water to the 300 mL mark on the neck of the flask. Calculate the concentration (in molarity units) of aluminum bromide in the resulting solution? Calculate the mass, in grams of sodium iodide that must be added to a 250 mL volumetric flask in order to prepare 250 mL of a 0.138 M aqueous...
3.355 M K2SO4 solution can be prepared by A) dilution of 500.0 mL of 1.00 MK2SO4...
3.355 M K2SO4 solution can be prepared by A) dilution of 500.0 mL of 1.00 MK2SO4 to 1.00 L B) dissolving 46.7 g of K2SO4 in water and diluting to 500.0 ml, then diluting 25.0 ml of this solution to a total volume of 500.0 mL C) dissolving 46.7 g of K2SO4 in water and diluting to a total volume of 250.0 mL D) dilution of 1.00 mL of 0.355 M K2SO4 to 1.00 L E) diluting 46.7 mL of...
Just answer number 8
7. The average adult male has a total blood volume of 5.0L After drinking a few beers, he has a BAC[blood alcohol concentration) of 0.10. What mass of alcohol is circulating in his blood? 8. Antacids are often used to relieve pain and promote healing in the treatment of mild ulcers. Write balanced net ionic equations for the reactions between the HCl(ag) in the stomach and each of the following substances used in various antacids: a....
4- (a) Calculate the concentration of Cd2+ ion in a solution prepared by mixing 2.0 mL of 1 M CA(NO3)2 solution with 1.0 L of 4.0 M NH3 solution. [Assume that the volume does not change after the addition of 2.0 ml of 1 M Cd(NO3)2] (b) Will you be able to see Ca(OH)2(6) precipitate in the solution? (Kr for Ca(NH3)42+ = 1.0 x 107, Kb for NH3 = 1.8 x 10-5; Ksp for Ca(OH)2 = 5.9 x 10-15 Cd2+...
4.(16pts, min) Do either (a) or (b) (a) How many ml. of 0.0550M COH is needed to titrate 16.30 mL of 0.0491 M Diproteid HX. The titration reaction is x + 2 COH - > C X + 2,0 (b) A 0.860 g sample containing Ag was treated Na Sia), to precipitate Ag Sio via - 2 Ag + 8 AS) If the precipitate of Ag S() weighed 0.138 g. what was the % Ag in the sample? Data: Atomic...
What is the pH n aqueous solution with a hydroxide ion concentration of 1.60 x 10-4 M? O 14.2 03.80 O 10.2 0 -0.204 Consider the reaction. HF(aq) + KOH(aq) — KF(aq) + H20(1) What is the net ionic equation for the chemical reaction? HF(aq) + K+ (aq) + OH(aq) — K+(aq) + F-(aq) + H+(1) + OH-(1 HF(aq) + K+ (aq) —> K+ (aq) + H2O(l) HF(aq) + K+(aq) + OH- (aq) — K+(aq) +F-(aq) + H2O(1) HF(aq) +...
Feedback Given that Kb 4.4x10-4 for methylamine exactly 650 mL of a buffer solution which has a pH of 10.84 and a final methylammonium chloride salt concentration [CHyNH,]-0.100 M, one would need to use (mass) of CH3NH3CI(s) Tries 0/S and (volume) of 3.00 M sodium hydroxide solution, plus enough water to make up the total volume. Answer Tries 0/5 Post Discussion Send Feed
A chemistry teacher needs to make 2.30 L of a potassium chloride solution for an experimen The concentration of the required solution is 3.10 M. How many grams of KCI will she need to use? 0 7.13 g KCI 0 231 g KCI O 532 g KCI 0.0956 g KCI What is the equation for the ion product constant of water at 25 °C? Kw [H,0+][OH-] [H,O] = 1.00 x 10-14 Kw [H,0+1 [OH-] = 1.00 x 10-14 Kw =...
71. A solution of nitric acid has a density of 1.5 g/mL and is 20% by weight HNO3. a. What is the molarity of this solution of HNO;? b. What volume of this solution should be taken in order to prepare of 5.0 L of a solution of 0.15 M nitric acid by dilution with water? In order to obtain a precise concentration, the 0.15 M HNO solution is standardized against pure Hgo (molar mass = 216.59 g/mol) by titrating...
A student weighs out 14.6 g of AlBrz, transfers it to a 300 mL volumetric flask, adds enough water to dissolve the solid and then adds water to the 300 mL mark on the neck of the flask. Calculate the concentration (in molarity units) of aluminum bromide in the resulting solution? Calculate the mass, in grams of sodium iodide that must be added to a 250 mL volumetric flask in order to prepare 250 mL of a 0.138 M aqueous...
3.355 M K2SO4 solution can be prepared by A) dilution of 500.0 mL of 1.00 MK2SO4 to 1.00 L B) dissolving 46.7 g of K2SO4 in water and diluting to 500.0 ml, then diluting 25.0 ml of this solution to a total volume of 500.0 mL C) dissolving 46.7 g of K2SO4 in water and diluting to a total volume of 250.0 mL D) dilution of 1.00 mL of 0.355 M K2SO4 to 1.00 L E) diluting 46.7 mL of...
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