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![Page Beaker A Balls - 2 Beaker Balls 25 pH = -log (Hot for beaker A 5:32 = -log[H20+) [Hot] - 10 -5.32 Hot] = 4.79*10-6 M I f](http://img.homeworklib.com/questions/8af7ed40-d266-11eb-9065-bddb57f2cdfb.png?x-oss-process=image/resize,w_560)
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Enter your answer in the provided box. The two molecular scenes below depict the relative concentrations...
Be sure to answer all parts. The molecular scene at right depicts the relative concentrations of...
Be sure to answer all parts.
The molecular scene at right depicts the relative concentrations of
H3O+ (purple) and
OH−
(green) in an aqueous solution at 25
°
C. (Counter ions and solvent molecules are omitted for
clarity.)
(a) Calculate the pH.
(b) How many H3O+ ions would you have to
draw for
every OH− ion to depict a solution of pH 4.90?
Enter your answer in scientific notation.
×
10
We were unable to transcribe this imageWe were unable...
The scenes below depict the relative concentrations of H3PO4, H2PO4 , and HPO42- during a titration...
The scenes below depict the relative concentrations of H3PO4, H2PO4 , and HPO42- during a titration with aqueous NaOH, but they are out of order. (Phosphate groups are purple, hydrogens are blue, and Nations and water molecules are not shown.) = H,PO = H2PO = HPO 2- (a) List the scenes in the correct order. First (select) A (select) 4 (select) Last (b) What is the pH in the correctly ordered second scene (K,1 = 7.2 x 10", K 2...
Enter your answer in the provided box. Given the same reactant concentrations, the reaction CO(g) +...
Enter your answer in the provided box. Given the same reactant concentrations, the reaction CO(g) + Cl2(g) COCl2() at 235°C is 54.3 times as fast as the same reaction at 157°C. Calculate the activation energy for this reaction. Assume that the frequency factor is constant. kJ/mol
Enter your answer in the provided box. Because the van der Waals constant b is the...
Enter your answer in the provided box. Because the van der Waals constant b is the excluded volume per mole of a gas, we can use the value of b to estimate the radius of a molecule or an atom. Consider a gas that consists of molecules, for which the van der Waals constant b is 0.0295 L/mol. Estimate the molecular radius in picometers. Assume that the molecules are spherical.
i need all POST-LAB QUESTIONS (Type in your answers to the questions below) 1. In Activity...
i need all
POST-LAB QUESTIONS (Type in your answers to the questions below) 1. In Activity 1 how would the amount of NaCl produced be affected (more, less, remain the same) if instead of adding 2 mL of 1 M NA,CO, you added 4 ml. Explain. 2. In Activity 6 how would the amount of NaCl produced be affected (more, less, remain the same) if instead of adding 2 mL of 1 M HCl you added 4 ml. Explain. 3....
Enter your answer in the provided box. What is the pH of a solution containing 0.53...
Enter your answer in the provided box. What is the pH of a solution containing 0.53 M HCOOH and 0.63 M HCOOK? The K, for HCOOH is 1.7 x 104 Select all that apply. Which of the following solutions can act as a buffer solution? 0 KCNHCN Na2SO/NaHSO4 NHz/NH,NO, NaI/HI
Enter your answer in the provided box. A quantity of 2.00 x 102 mL of 0.477...
Enter your answer in the provided box. A quantity of 2.00 x 102 mL of 0.477 M HCl is mixed with 2.00 x 102mL of 0.239 M Ba(OH), in a constant-pressure calorimeter of negligible heat capacity. The initial temperature of the HCl and Ba(OH)2 solutions is the same at 20.45°C. For the process below, the heat of neutralization is -56.2 kJ/mol. What is the final temperature of the mixed solutions? H(aq) + OH(aq) H20(1).
Enter your answer in the box provided. Calculate the pH of a 0.27 M sodium formate...
Enter your answer in the box provided. Calculate the pH of a 0.27 M sodium formate solution (HCOONa). K, for HCOO - 5.9 x 1011 pH= Select all that apply. Check the box(es) next to the salts that will undergo hydrolysis. KF NaNO3 NH,NO2 ces MgSO4 KCN CHCOONa RbI ONa,CO3 CaCl HCOOK OO00O Click in the answer box to activate the palette. In a certain experiment a student finds that the pHs of a 0.10 M solutions of three potassium...
Enter your answer in the provided box. A stockroom supervisor measured the contents of a partially...
Enter your answer in the provided box. A stockroom supervisor measured the contents of a partially filled 25.0-gallon acetone drum on a day when the temperature was 18.0 degree C and atmospheric pressure was 756 mmHg, and found that 15.4 gallons of the solvent remained. After tightly sealing the drum, an assistant dropped the drum while carrying it upstairs to the organic laboratory. The drum was dented and its internal volume was decreased to 20.4 gallons. What is the total...
Enter your answer in the provided box. Ammonia burns in oxygen gas to form nitric oxide...
Enter your answer in the provided box. Ammonia burns in oxygen gas to form nitric oxide (NO) and water vapor. How many volumes of NO are obtained from five volumes of ammonia at the same temperature and pressure? volume(s)
Be sure to answer all parts.
The molecular scene at right depicts the relative concentrations of
H3O+ (purple) and
OH−
(green) in an aqueous solution at 25
°
C. (Counter ions and solvent molecules are omitted for
clarity.)
(a) Calculate the pH.
(b) How many H3O+ ions would you have to
draw for
every OH− ion to depict a solution of pH 4.90?
Enter your answer in scientific notation.
×
10
We were unable to transcribe this imageWe were unable...
The scenes below depict the relative concentrations of H3PO4, H2PO4 , and HPO42- during a titration with aqueous NaOH, but they are out of order. (Phosphate groups are purple, hydrogens are blue, and Nations and water molecules are not shown.) = H,PO = H2PO = HPO 2- (a) List the scenes in the correct order. First (select) A (select) 4 (select) Last (b) What is the pH in the correctly ordered second scene (K,1 = 7.2 x 10", K 2...
Enter your answer in the provided box. Given the same reactant concentrations, the reaction CO(g) + Cl2(g) COCl2() at 235°C is 54.3 times as fast as the same reaction at 157°C. Calculate the activation energy for this reaction. Assume that the frequency factor is constant. kJ/mol
i need all
POST-LAB QUESTIONS (Type in your answers to the questions below) 1. In Activity 1 how would the amount of NaCl produced be affected (more, less, remain the same) if instead of adding 2 mL of 1 M NA,CO, you added 4 ml. Explain. 2. In Activity 6 how would the amount of NaCl produced be affected (more, less, remain the same) if instead of adding 2 mL of 1 M HCl you added 4 ml. Explain. 3....
Enter your answer in the provided box. What is the pH of a solution containing 0.53 M HCOOH and 0.63 M HCOOK? The K, for HCOOH is 1.7 x 104 Select all that apply. Which of the following solutions can act as a buffer solution? 0 KCNHCN Na2SO/NaHSO4 NHz/NH,NO, NaI/HI
Enter your answer in the provided box. A quantity of 2.00 x 102 mL of 0.477 M HCl is mixed with 2.00 x 102mL of 0.239 M Ba(OH), in a constant-pressure calorimeter of negligible heat capacity. The initial temperature of the HCl and Ba(OH)2 solutions is the same at 20.45°C. For the process below, the heat of neutralization is -56.2 kJ/mol. What is the final temperature of the mixed solutions? H(aq) + OH(aq) H20(1).
Enter your answer in the box provided. Calculate the pH of a 0.27 M sodium formate solution (HCOONa). K, for HCOO - 5.9 x 1011 pH= Select all that apply. Check the box(es) next to the salts that will undergo hydrolysis. KF NaNO3 NH,NO2 ces MgSO4 KCN CHCOONa RbI ONa,CO3 CaCl HCOOK OO00O Click in the answer box to activate the palette. In a certain experiment a student finds that the pHs of a 0.10 M solutions of three potassium...
Enter your answer in the provided box. A stockroom supervisor measured the contents of a partially filled 25.0-gallon acetone drum on a day when the temperature was 18.0 degree C and atmospheric pressure was 756 mmHg, and found that 15.4 gallons of the solvent remained. After tightly sealing the drum, an assistant dropped the drum while carrying it upstairs to the organic laboratory. The drum was dented and its internal volume was decreased to 20.4 gallons. What is the total...
Enter your answer in the provided box. Ammonia burns in oxygen gas to form nitric oxide (NO) and water vapor. How many volumes of NO are obtained from five volumes of ammonia at the same temperature and pressure? volume(s)
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