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3 The solubility of CO2 at 25°C is 0.145 g in 100 mL * Assuming the...
3. A student constructs a coffee cup calorimeter and places 50.0 mL of water into it....
3. A student constructs a coffee cup calorimeter and places 50.0 mL of water into it. After a brief period of stabilization, the temperature of the water in the calorimeter is determined to be 22.1 "C. To this is added 50.0 mL of water that was originally at a temperature of 54.5 C. A careful plot of the temperatures recorded after this established the temperature at T, was 31.86 °C. What is the calorimeter constant in J/C for this calorimeter?...
The solubility of benzoic acid in water is 6.80 g per 100 mL at 100 °C...
The solubility of benzoic acid in water is 6.80 g per 100 mL at 100 °C and 0.34 g per 100 mL at 25 °C. Calculate the minimum volume of water needed to dissolve 1.00 g of benzoic acid at 100 °C. Calculate the maximum theoretical percent recovery from recrystallization of 1.00 g of benzoic acid from 15 mL of water, assuming the solution is filtered at 25 °C. How much benzoic acid can you dissolve in 25 mL of...
3. A student constructs a coffee cup calorimeter and places 50.0 mL of water into it....
3. A student constructs a coffee cup calorimeter and places 50.0 mL of water into it. After a brief period of stabilization, the temperature of the water in the calorimeter is determined to be 22.7 °C. To this is added 50.0 mL of water that was originally at a temperature of 54.5 C. A careful plot of the temperatures recorded after this established the temperature at To was 30.24 C. What is the calorimeter constant in J/C for this calorimeter?...
1.5 pts Question 8 U If 100-ml. of 1.0 M Sr(OH)2 is added to 100 mL...
1.5 pts Question 8 U If 100-ml. of 1.0 M Sr(OH)2 is added to 100 mL of 1.0 M HCI, the pH of the mixture would be equal to 7 larger than 7 smaller than 7 The pH cannot be predicted based on the available information, Question 9 4 pts Exactly 1.100 g of CO2(g) was introduced into a 1.00-L flask that already contained some O2 gas. The flask was warmed to 100 °C and the total pressure was found...
The solubility of adipic acid in water is 1.40 g/ 100 mL at 10 C, and...
The solubility of adipic acid in water is 1.40 g/ 100 mL at 10 C, and 160 g/ 100 mL at 100 C. A. If 0.950 g of adipic acid is dissolved in 3.00 mL of boiling water and cooled to 10 C. Calculate the maximum mass of adipic acid that could crystallize from the solution. B. What is the maximum amount of adipic acid that could dissolve in 3.00 mL of boiling water?
Given the solubility of benzoic acid in water is: 0.68 g/100 mL a 100 °C, and...
Given the solubility of benzoic acid in water is: 0.68 g/100 mL @ 100 °C, and 0.34 g/100 mL at 25 °C. Calculate: a) Volume (mL) of water needed to dissolve 100 mg of benzoic acid at 100 °C. b) Weight of benzoic (mg) acid that remain soluble when the solution in part (a) is cooled to 25 °C. c) Recovery % of benzoic acid crystals that can be collected when the solution in part (a) is cooled to 25 °C.
The solubility of PbBr_2 is 0.427 g per 100 mL of solution at 25 degree C....
The solubility of PbBr_2 is 0.427 g per 100 mL of solution at 25 degree C. Determine the value of the solubility product constant for this strong electrolyte. Lead(II) bromide does not react with water. 5.4 times 10^-4 6.3 times 10^-6 1.6 times 10^-6 3.1 times 10^-6 2.7 times 10^-4 Calculate the maximum concentration (in M) of silver ions (Ag^+) in a solution that contains 0.025 M of CO^2-_3. The K_sp of Ag_2 CO_3 is 8.1 times 10^-12. 8.1 times...
please answer both questions Exactly 1.100 g of CO2(g) was introduced into a 1.00-L flask that...
please answer both questions
Exactly 1.100 g of CO2(g) was introduced into a 1.00-L flask that already contained some O2 gas. The flask was warmed to 100 °C and the total pressure was found to be 815 mmHg. No chemical reaction occurred between CO2 and O2. Calculate the mass of Oz in the flask. 1.12 g 02 0.160 g 02 0.754g 02 0.820 g 02 0.321 g 02 Question 10 1.5 pts An aqueous solution of HCl is added to...
A 2.490-g sample of cadmium metal completely reacts when placed in a coffee cup calorimeter that...
A 2.490-g sample of cadmium metal completely reacts when placed in a coffee cup calorimeter that contains 75.0 mL of a dilute sulfuric acid solution (aqueous) (density of 1.03 g/mL) to produce hydrogen gas and dissolved cadmium sulfate. The chemical reaction is exothermic causing the temperature of the resulting aqueous solution to change from 21.5oC to 32.5oC. Write a balanced chemical equation for the chemical reaction that occurs. Find the enthalpy change, in kJ/mol, for the chemical reaction, assuming the specific...
6.A 12.8 g sample of ethanol (C,H,OH) is burned in a calorimeter with a heat capacity...
6.A 12.8 g sample of ethanol (C,H,OH) is burned in a calorimeter with a heat capacity of 5.65 kJ/°C. Assume the heat from the sample is negligible compared to the calorimeter. Determine the initial temperature of the calorimeter if the final temperature is 85.7°C. The molar mass of ethanol is 46.07 g/mol. С-Н,ОН , + 3 О,ее — 2 СОде + 3 Н,0 qrxn -1235 kJ 7. Two solutions, initially at 24.60 °C, are mixed in a coffee cup calorimeter...
3. A student constructs a coffee cup calorimeter and places 50.0 mL of water into it. After a brief period of stabilization, the temperature of the water in the calorimeter is determined to be 22.1 "C. To this is added 50.0 mL of water that was originally at a temperature of 54.5 C. A careful plot of the temperatures recorded after this established the temperature at T, was 31.86 °C. What is the calorimeter constant in J/C for this calorimeter?...
3. A student constructs a coffee cup calorimeter and places 50.0 mL of water into it. After a brief period of stabilization, the temperature of the water in the calorimeter is determined to be 22.7 °C. To this is added 50.0 mL of water that was originally at a temperature of 54.5 C. A careful plot of the temperatures recorded after this established the temperature at To was 30.24 C. What is the calorimeter constant in J/C for this calorimeter?...
1.5 pts Question 8 U If 100-ml. of 1.0 M Sr(OH)2 is added to 100 mL of 1.0 M HCI, the pH of the mixture would be equal to 7 larger than 7 smaller than 7 The pH cannot be predicted based on the available information, Question 9 4 pts Exactly 1.100 g of CO2(g) was introduced into a 1.00-L flask that already contained some O2 gas. The flask was warmed to 100 °C and the total pressure was found...
The solubility of PbBr_2 is 0.427 g per 100 mL of solution at 25 degree C. Determine the value of the solubility product constant for this strong electrolyte. Lead(II) bromide does not react with water. 5.4 times 10^-4 6.3 times 10^-6 1.6 times 10^-6 3.1 times 10^-6 2.7 times 10^-4 Calculate the maximum concentration (in M) of silver ions (Ag^+) in a solution that contains 0.025 M of CO^2-_3. The K_sp of Ag_2 CO_3 is 8.1 times 10^-12. 8.1 times...
please answer both questions
Exactly 1.100 g of CO2(g) was introduced into a 1.00-L flask that already contained some O2 gas. The flask was warmed to 100 °C and the total pressure was found to be 815 mmHg. No chemical reaction occurred between CO2 and O2. Calculate the mass of Oz in the flask. 1.12 g 02 0.160 g 02 0.754g 02 0.820 g 02 0.321 g 02 Question 10 1.5 pts An aqueous solution of HCl is added to...
6.A 12.8 g sample of ethanol (C,H,OH) is burned in a calorimeter with a heat capacity of 5.65 kJ/°C. Assume the heat from the sample is negligible compared to the calorimeter. Determine the initial temperature of the calorimeter if the final temperature is 85.7°C. The molar mass of ethanol is 46.07 g/mol. С-Н,ОН , + 3 О,ее — 2 СОде + 3 Н,0 qrxn -1235 kJ 7. Two solutions, initially at 24.60 °C, are mixed in a coffee cup calorimeter...
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