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Alt Ctrl Number: ame: ctivity Section: 1:30 PM, 2:30 PM, 3:30 PM, 4:30 PM (circle one)...
es often TCinerase) Lathce Endg Name: Number: Activity Section: 1:30 PM, 2:30 PM, 3:30 PM, 4:30...
es often TCinerase) Lathce Endg Name: Number: Activity Section: 1:30 PM, 2:30 PM, 3:30 PM, 4:30 PM (circle one) 1. How will the enthalpy change (AH) values for the following reactions compare? (You don't n- to do any calculations here. Just think about the steps required to make the calculation.) H2(g)+½ O2(g)-> H2O(g) vs. 2H2(g) + O2(g) -> 2H2O(g) The reacton would dubu Sne tottu equatio re Scrvc hon s muth ply b we Lofi the ong AH=+40 kJ 2...
10) (10pts) A cold pack consists of a small inner bag that contains water inside another...
10) (10pts) A cold pack consists of a small inner bag that contains water inside another larger bag that contains solid ammonium nitrate. When a cold pack is needed, the inner bag is broken and the water and ammonium nitrate are shaken together to dissolve the solid. If the inner bag contains 117 mL of water (density 1.00 g/mL), how many grams of ammonium nitrate must the outer bag contain to lower the temperature of the water from 23.0 °C...
Styrene, CgHg, is one of the substances used in the production of synthetic rubber. When styrene...
Styrene, CgHg, is one of the substances used in the production of synthetic rubber. When styrene burns in oxygen to form carbon dioxide and liquid water under standard-state conditions at 25°C, 42.15 kJ are released per gram of styrene. Find the standard enthalpy of formation of styrene at 25°C, AH" (C02(9)) = -393.5 kJ/mol, AH®:(H,0(I) = -285.8 kJ/mol Select one: a. - 4390 kJ/mol b.-1044 kJ/mol c. -8681 kJ/mol d. +99 kJ/mol O e. +637 kJ/mol The heat of solution...
CHE201-71: General Chemistry and Quantitative Analysis I laboratory: Chapter 5 Recitation 1. When 1.025 g of...
CHE201-71: General Chemistry and Quantitative Analysis I laboratory: Chapter 5 Recitation 1. When 1.025 g of naphthalene (C16H) burns in a bomb calorimeter, the temperature rises from 24.25 °C to 32.33 "C. The heat capacity of the calorimeter is 5.86 kJ/"C. Calculate: a) Gran per mole of naphthalene for the combustion process b) gran per gram of naphthalene for the combustion process Instant cold packs, often used to ice athletic injuries on the field contain ammonium nitrate and water separated...
Experiment 13-Post-Lab Assignment 1. Athletes use cold packs containing ammonium nitrate solutions to ice their injuries....
Experiment 13-Post-Lab Assignment 1. Athletes use cold packs containing ammonium nitrate solutions to ice their injuries. A 1.25 G sample of ammonium nitrate is dissolved in 25.0 mL of water to form a solution. The temperature of the solution falls from 25.8°C to 21.9°C. Find the enthalpy of the reaction (AH ), in kJ/mol. Assume the density of water is 1.00 g/mL and the heat capacity of the total solution to be 4.184 J/g °C 2. Calculate AHⓇ in kJ/mol...
need help ASAP Extra Credit Worksheet: Chapter 6-7 1. Ammonia (NH) burns in the presence of...
need help ASAP
Extra Credit Worksheet: Chapter 6-7 1. Ammonia (NH) burns in the presence of a copper catalyst to form nitrogen gas. 4NH,(?) + 30,(6) 2N,() + 6H2Og AH' = -1267 kJ How much heat would evolve when burn 35.80 g of ammonia burns? (1 point) (1 point) 2. Calculate the heat of reaction for PbCl2(s) + Cl2(g) → PbC14(1) Using the following set of reactions: Pb(s) + Cl2(g) → PbC1z(s); AH = -359.4 k) Pb(s) + 2C12() PbC140);...
4. (2) How many grams of calcium sulfate will form from the reaction of 25.0 mL...
4. (2) How many grams of calcium sulfate will form from the reaction of 25.0 mL of 0.35 M potassium sulfate solution with excess calcium nitrate? Write the balanced equation first. (Solution Stoichiometry 101) 5. (0.5 p each) Classify the following processes as exothermic or endothermie. Condensation of 12: Sublimation of carbon dioxide: 6. (1 p) What is the specific heat of a metal rod that weighs 250 g and increases its temperature from 22.5 °C to 54.7 °C when...
1. A 20.0-8 piece of aluminum at 0.0°C is dropped into a beaker containing 100.0 g...
1. A 20.0-8 piece of aluminum at 0.0°C is dropped into a beaker containing 100.0 g of water. The temperature of the water drops from 90.0°C to 85.7°C. What quantity of energy did the aluminum absorb? What is the specific heat of the aluminum? 2. If 55.0 ml of water at 22.5°C is mixed with 100.0 ml of water at 95.2 'C, what would you expect for a final temperature? 3. Cold packs (the kind that get cold when you...
Classwork: Ch. 6 Thermodynamics 1. A sample of nitrogen expands in volume from 1.6 L to...
Classwork: Ch. 6 Thermodynamics 1. A sample of nitrogen expands in volume from 1.6 L to 5.4 L at constant temperature. What is the work in joules if the gas expands (a) against a vacuum and (b) against a constant pressure of 3.7 atm? 2. How much heat is evolved (given off) when 266 g of white phosphorus (P) burn in air? P, (s) + 50,0) - P.O.(s) AH--3013 kJ/mol 3. Benzene (CH) burns in oxygen to produce carbon dioxide...
Any help with any of the problems, is appreciated! Enthalpy Exercises 1. (20 pts) The Seattle...
Any help with any of the problems, is appreciated!
Enthalpy Exercises 1. (20 pts) The Seattle fire department fought several violent fires in 1991 whose temperatures were so high that they melted steel and crumbled concrete. In all likelihood, the arsonists were using a mixture of aluminum dust and ammonium nitrate, which produces aluminum oxide, water vapor, and nitrogen gas. Calculate the amount of heat evolved by the reaction of one pound each of ammonium nitrate and aluminum dust. 2....
es often TCinerase) Lathce Endg Name: Number: Activity Section: 1:30 PM, 2:30 PM, 3:30 PM, 4:30 PM (circle one) 1. How will the enthalpy change (AH) values for the following reactions compare? (You don't n- to do any calculations here. Just think about the steps required to make the calculation.) H2(g)+½ O2(g)-> H2O(g) vs. 2H2(g) + O2(g) -> 2H2O(g) The reacton would dubu Sne tottu equatio re Scrvc hon s muth ply b we Lofi the ong AH=+40 kJ 2...
10) (10pts) A cold pack consists of a small inner bag that contains water inside another larger bag that contains solid ammonium nitrate. When a cold pack is needed, the inner bag is broken and the water and ammonium nitrate are shaken together to dissolve the solid. If the inner bag contains 117 mL of water (density 1.00 g/mL), how many grams of ammonium nitrate must the outer bag contain to lower the temperature of the water from 23.0 °C...
Styrene, CgHg, is one of the substances used in the production of synthetic rubber. When styrene burns in oxygen to form carbon dioxide and liquid water under standard-state conditions at 25°C, 42.15 kJ are released per gram of styrene. Find the standard enthalpy of formation of styrene at 25°C, AH" (C02(9)) = -393.5 kJ/mol, AH®:(H,0(I) = -285.8 kJ/mol Select one: a. - 4390 kJ/mol b.-1044 kJ/mol c. -8681 kJ/mol d. +99 kJ/mol O e. +637 kJ/mol The heat of solution...
CHE201-71: General Chemistry and Quantitative Analysis I laboratory: Chapter 5 Recitation 1. When 1.025 g of naphthalene (C16H) burns in a bomb calorimeter, the temperature rises from 24.25 °C to 32.33 "C. The heat capacity of the calorimeter is 5.86 kJ/"C. Calculate: a) Gran per mole of naphthalene for the combustion process b) gran per gram of naphthalene for the combustion process Instant cold packs, often used to ice athletic injuries on the field contain ammonium nitrate and water separated...
Experiment 13-Post-Lab Assignment 1. Athletes use cold packs containing ammonium nitrate solutions to ice their injuries. A 1.25 G sample of ammonium nitrate is dissolved in 25.0 mL of water to form a solution. The temperature of the solution falls from 25.8°C to 21.9°C. Find the enthalpy of the reaction (AH ), in kJ/mol. Assume the density of water is 1.00 g/mL and the heat capacity of the total solution to be 4.184 J/g °C 2. Calculate AHⓇ in kJ/mol...
need help ASAP
Extra Credit Worksheet: Chapter 6-7 1. Ammonia (NH) burns in the presence of a copper catalyst to form nitrogen gas. 4NH,(?) + 30,(6) 2N,() + 6H2Og AH' = -1267 kJ How much heat would evolve when burn 35.80 g of ammonia burns? (1 point) (1 point) 2. Calculate the heat of reaction for PbCl2(s) + Cl2(g) → PbC14(1) Using the following set of reactions: Pb(s) + Cl2(g) → PbC1z(s); AH = -359.4 k) Pb(s) + 2C12() PbC140);...
4. (2) How many grams of calcium sulfate will form from the reaction of 25.0 mL of 0.35 M potassium sulfate solution with excess calcium nitrate? Write the balanced equation first. (Solution Stoichiometry 101) 5. (0.5 p each) Classify the following processes as exothermic or endothermie. Condensation of 12: Sublimation of carbon dioxide: 6. (1 p) What is the specific heat of a metal rod that weighs 250 g and increases its temperature from 22.5 °C to 54.7 °C when...
1. A 20.0-8 piece of aluminum at 0.0°C is dropped into a beaker containing 100.0 g of water. The temperature of the water drops from 90.0°C to 85.7°C. What quantity of energy did the aluminum absorb? What is the specific heat of the aluminum? 2. If 55.0 ml of water at 22.5°C is mixed with 100.0 ml of water at 95.2 'C, what would you expect for a final temperature? 3. Cold packs (the kind that get cold when you...
Classwork: Ch. 6 Thermodynamics 1. A sample of nitrogen expands in volume from 1.6 L to 5.4 L at constant temperature. What is the work in joules if the gas expands (a) against a vacuum and (b) against a constant pressure of 3.7 atm? 2. How much heat is evolved (given off) when 266 g of white phosphorus (P) burn in air? P, (s) + 50,0) - P.O.(s) AH--3013 kJ/mol 3. Benzene (CH) burns in oxygen to produce carbon dioxide...
Any help with any of the problems, is appreciated!
Enthalpy Exercises 1. (20 pts) The Seattle fire department fought several violent fires in 1991 whose temperatures were so high that they melted steel and crumbled concrete. In all likelihood, the arsonists were using a mixture of aluminum dust and ammonium nitrate, which produces aluminum oxide, water vapor, and nitrogen gas. Calculate the amount of heat evolved by the reaction of one pound each of ammonium nitrate and aluminum dust. 2....
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