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Need help solving the calculationss. please show work on a seperae piece of paper and show...
Need help solving the calculationss. please show work on a
seperae piece of paper and show all work.
Background information.
Experiment 1: Measure the Freezing Point of Pure Water 10 1. Volume of water (mL): 10 2. Mass of water (g): 3. Freezing Temperature (°C): 0 Experiment 2: Measure the Freezing Point of a Solution of an Unknown Substance 1. Mass of FP sample 1 (g): 2.00 si 2. Mass of sample and water (g): 12.000 3. Freezing Temperature (°C):...
Same Question and data but different parts. Please solve for all three. Last attempt left QUESTION...
Same Question and data but different parts. Please solve for all
three. Last attempt left
QUESTION 1 The data given in question-1 is used in the remainder of the postlab assignment questions. A 2.0 g of unknown material was dissolved in 9.00 mL of water (density of water = 1.0 g/mL) The freezing point of pure water is 0.00 °C and Kf of water is 1.86 °C/m. If the solution made above shows a new freezing point at -2.76 °C,...
I need help with problem 16. Not problem 16 under chapter 13 set 5. *9. 9....
I need help with problem 16. Not problem 16 under chapter 13 set
5.
*9. 9. The vapor pressure of pure toluene, CyHx, is 137 torr at 60°C. What is the vapor pressure of toluene in a solution made by dissolving 25.0 grams of the nonelectrolyte glucose, C6H12O6, in 50.0 grams of toluene at 60°C? 10. The vapor pressure of water is 118 torr at 55°C. How many grams of urea, CO(NH2)2 must be added to 67.4 grams of water...
An aqueous CaCl2 solution has a vapor pressure of 80.2 mmHg at 50 ∘C. The vapor pressure of pure water at this temperature is 92.6 mmHg. What is the concentration of CaCl2 in mass percent? A hypotheti...
An aqueous CaCl2 solution has a vapor pressure of 80.2 mmHg at 50 ∘C. The vapor pressure of pure water at this temperature is 92.6 mmHg. What is the concentration of CaCl2 in mass percent? A hypothetical solution forms between a solid and a liquid. The values of the thermodynamic quantities involved in the process are shown in the following table. Action Enthalpy separation of solute 11.5 kJ/mol separation of solvent 21.8 kJ/mol formation of solute-solvent interactions -86.7 kJ/mol solute...
I need help in find the solution and understanding the work process behind solve the problems...
I need help in find the solution and understanding the
work process behind solve the problems step by step. I would
appreciate the help with these problems
1. What is the treezing point of a solution prepared by dissolving 20 g of NaCI (MW 58.4 g mol) in 150 ml. of water? The freezing point depression constant, K, for water 53.4 2. What is the osmotic pressure formed by dissolving 44 2 mg of aspirin (C,l1,0) in 0.358 L of...
(4 Points) Gasoline is primarily a mixture of hydrocarbons and is sold with an octane rating...
(4 Points) Gasoline is primarily a mixture of hydrocarbons and is sold with an octane rating that is based on a comparison with the properties of isooctane (CsHis), which has an enthalpy of vaporization of 35.8 kJ/mol and a normal boiling point of 98.2 °C. Determine the vapor pressure of isooctane on a very hot day when the temperature is 38.0 °C. 1. (4 Points) A 15.0 mg sample of a protein was dissolved in water to produce 5.00 mL...
answer number 40, a and c with all work shown, the ka value for HF us...
answer number 40, a and c with all work shown,
the ka value for HF us 3.5 x 10^-4
each solut 39. Use the Henderson-Hasselbalch equal each solution a. a solution that is 0.135 M in HCIO and 0.155 M in KCIO b. a solution that contains 1.05% CH3NH, by mass and 1.10% CH NH;Br by mass c. a solution that contains 10.0 g of HC H2O2 and 10.0 g of NaC,H,O, in 150.0 mL of solution 40. Use the...
can some one help to solve the question 4 bellow. the answer is also bellow, show...
can some one help to solve the question 4 bellow. the answer is
also bellow, show all work thanks
solution: Obtain molar mass21100g/mol
4. When a 0.51 g sample of an isolated protein was dissolved in a 100.0 mL solution at 25 °C, the osmotic pressure against the buffer solution without protein was 4.5 mmHg. Determine the molecular weight of this protein. What was the concentration of protein (as a molarity) in the solution?
need #7-10 answered 6. The solubility of nitrogen gas at 25°C and a nitrogen pressure of...
need #7-10 answered
6. The solubility of nitrogen gas at 25°C and a nitrogen pressure of 522 mmHg is 4.7 x 10 mol/L. What is the value of the Henry's Law constant in mol/L-atm? A) 6.8 × 10-4 mol/L-atm B) 4.7 x 10 mol/L-atm C) 3.2 × 104 moVL-atm D) 9.0 x 10 mol/L atm E) 1.5 x 10mol/L atm 7. According to Raoult's law, which statement is false? A) The vapor pressure of a solvent over a solution decreases...
6.16 Classify each of the following solutes as an electrolyte or a nonelectrolyte a. NaNO3 b....
6.16 Classify each of the following solutes as an electrolyte or a nonelectrolyte a. NaNO3 b. C6H12O6 c. FeCl3 6.26a Calculate the composition of 20.0 g acetic acid dissolved in 2.50 L in mass/volume% 6.28b Calculate the %m/m composition of 50.0 g KCl in 5.00 x 102 mL solution (d=1.14g/mL) 6.30a How many g of solute are needed to prepare 2.50x102 g of 5.00% (m/m) NH4Cl? 6.34 How many mL of 4.0 mass/volume % Mg(NO3)2 solution would contain 1.2 g...
Need help solving the calculationss. please show work on a
seperae piece of paper and show all work.
Background information.
Experiment 1: Measure the Freezing Point of Pure Water 10 1. Volume of water (mL): 10 2. Mass of water (g): 3. Freezing Temperature (°C): 0 Experiment 2: Measure the Freezing Point of a Solution of an Unknown Substance 1. Mass of FP sample 1 (g): 2.00 si 2. Mass of sample and water (g): 12.000 3. Freezing Temperature (°C):...
Same Question and data but different parts. Please solve for all
three. Last attempt left
QUESTION 1 The data given in question-1 is used in the remainder of the postlab assignment questions. A 2.0 g of unknown material was dissolved in 9.00 mL of water (density of water = 1.0 g/mL) The freezing point of pure water is 0.00 °C and Kf of water is 1.86 °C/m. If the solution made above shows a new freezing point at -2.76 °C,...
I need help with problem 16. Not problem 16 under chapter 13 set
5.
*9. 9. The vapor pressure of pure toluene, CyHx, is 137 torr at 60°C. What is the vapor pressure of toluene in a solution made by dissolving 25.0 grams of the nonelectrolyte glucose, C6H12O6, in 50.0 grams of toluene at 60°C? 10. The vapor pressure of water is 118 torr at 55°C. How many grams of urea, CO(NH2)2 must be added to 67.4 grams of water...
I need help in find the solution and understanding the
work process behind solve the problems step by step. I would
appreciate the help with these problems
1. What is the treezing point of a solution prepared by dissolving 20 g of NaCI (MW 58.4 g mol) in 150 ml. of water? The freezing point depression constant, K, for water 53.4 2. What is the osmotic pressure formed by dissolving 44 2 mg of aspirin (C,l1,0) in 0.358 L of...
(4 Points) Gasoline is primarily a mixture of hydrocarbons and is sold with an octane rating that is based on a comparison with the properties of isooctane (CsHis), which has an enthalpy of vaporization of 35.8 kJ/mol and a normal boiling point of 98.2 °C. Determine the vapor pressure of isooctane on a very hot day when the temperature is 38.0 °C. 1. (4 Points) A 15.0 mg sample of a protein was dissolved in water to produce 5.00 mL...
answer number 40, a and c with all work shown,
the ka value for HF us 3.5 x 10^-4
each solut 39. Use the Henderson-Hasselbalch equal each solution a. a solution that is 0.135 M in HCIO and 0.155 M in KCIO b. a solution that contains 1.05% CH3NH, by mass and 1.10% CH NH;Br by mass c. a solution that contains 10.0 g of HC H2O2 and 10.0 g of NaC,H,O, in 150.0 mL of solution 40. Use the...
can some one help to solve the question 4 bellow. the answer is
also bellow, show all work thanks
solution: Obtain molar mass21100g/mol
4. When a 0.51 g sample of an isolated protein was dissolved in a 100.0 mL solution at 25 °C, the osmotic pressure against the buffer solution without protein was 4.5 mmHg. Determine the molecular weight of this protein. What was the concentration of protein (as a molarity) in the solution?
need #7-10 answered
6. The solubility of nitrogen gas at 25°C and a nitrogen pressure of 522 mmHg is 4.7 x 10 mol/L. What is the value of the Henry's Law constant in mol/L-atm? A) 6.8 × 10-4 mol/L-atm B) 4.7 x 10 mol/L-atm C) 3.2 × 104 moVL-atm D) 9.0 x 10 mol/L atm E) 1.5 x 10mol/L atm 7. According to Raoult's law, which statement is false? A) The vapor pressure of a solvent over a solution decreases...
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