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Question 11 (8 points) For the nitrate ion, NO3. predict the bond energy between nitrogen and...
Question 9 (8 points) Which molecule has polar bonds but is overall nonpolar? SO3 H₂S 03...
Question 9 (8 points) Which molecule has polar bonds but is overall nonpolar? SO3 H₂S 03 SO2 Question 10 (8 points) Which statement best describes the bond length(s) in the nitrite ion (shown)? The bond length of N-O is 136 pm and N-O is 122 pm. O: There are two bonds lengths where one bond is 136 pm, and the other is 122 pm. There is one bond length of 129 pm. There are two bonds lengths where the bonds...
Question 5 (4 points) What is the standard molar heat of solution for solid calcium bromide...
Question 5 (4 points) What is the standard molar heat of solution for solid calcium bromide (CaBr2) given the standard enthalpy of formation data below? CaBrz(s) → Ca2+ (aq) + 2 Br(aq) AHºf of CaBrz(s) is -682.8 kJ.mol-1 AH° of Ca2+(aq) is -542.83 kJ.mol-1 AH, Of Br(aq) is -121.55 kJ mol-1 - 1347.2 kJ.mol-1 -103.1 kJ-mol-1 -21.6 kJ-mol-1 +21.6 kJ-mol-1 Question 6 (4 points) In a 10.0 L vessel at 100.0°C, 10.0 grams of an unknown gas exert a pressure...
please help Question 38 (8 points) What element is oxidized and what is the oxidizing agent...
please help
Question 38 (8 points) What element is oxidized and what is the oxidizing agent in the reaction below? Fe2O3(s) + 3CO(g) - 2Fe(s) + 3CO2(e) Iron is oxidized, and the oxidizing agent is Fe2O3. Carbon is oxidized, and the oxidizing agent is Fe2O3. Iron is oxidized, and the oxidizing agent is CO. Carbon is oxidized, and the oxidizing agent is Co. Question 39 (8 points) What isotope is depicted in the figure? Key =proton =neutron lithium-7 helium-3 helium-4...
Using the equations Ca (s)2 O (g) Сао (s) 2 H2 (g) Determine the enthalpy for...
Using the equations Ca (s)2 O (g) Сао (s) 2 H2 (g) Determine the enthalpy for the reaction Са (s) + 2 H0 () — Са(ОН)2 (s) + H2 (9). CaO (s) AH° = -635 kJ/mol -64 kJ/mol H2O ()Ca(OH)2 (s) AH O2 (g)2 H2O (I) AH° = -572 kJ/mol kJ/mol 1 2 3 4 6 C 5 7 8 9 +/- 0 x 100 LO 11.01 g of MgSO4 is placed into 100.0 mL of water. The water's temperature...
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...
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...
The specific heat of iron is 0.450 J/g°C 1127 Chapter 6 Discussion Problems 1. How much energy must be transferred t...
The specific heat of iron is 0.450 J/g°C
1127 Chapter 6 Discussion Problems 1. How much energy must be transferred to raise the temperature of a cup of coffee (250 mL) from 20.5°C 10 95.6°C? Assume density and specific heat is the same as Water 4.16 Ig/ml 2. An 38.5 g piece of iron with temperature 78.8°C is placed in a beaker containing 244 g of water at 18.8°C. When thermal equilibrium is reached, what is the final temperature? Assume...
< Question 11 of 14 > In a constant-pressure calorimeter, 75.0 mL of 0.920 M H2SO4...
< Question 11 of 14 > In a constant-pressure calorimeter, 75.0 mL of 0.920 M H2SO4 was added to 75.0 mL of 0.300 M NaOH. The reaction caused the temperature of the solution to rise from 21.12 °C to 23.16 °C. If the solution has the same density and specific heat as water (1.00 g/mL and 4.184 J/(g · °C), respectively), what is AH for this reaction (per mole of H0 produced)? Assume that the total volume is the sum...
QUESTION 19 3 points S In the reaction Mg0(s) → Mg(s) + + 0.502(g) the enthalpy change AH*) is +6...
QUESTION 19 3 points S In the reaction Mg0(s) → Mg(s) + + 0.502(g) the enthalpy change AH*) is +602(AHP) kj mol. 1 and the entropy change (A5) is +109J k-1 mor1. Explain if the reaction is feasible at 1000K or 6000K? Berenrenh Arial
QUESTION 19 3 points S In the reaction Mg0(s) → Mg(s) + + 0.502(g) the enthalpy change AH*) is +602(AHP) kj mol. 1 and the entropy change (A5) is +109J k-1 mor1. Explain if the reaction...
Question 16 of 29 > Attempt 1 - Use the molar bond enthalpy data in the...
Question 16 of 29 > Attempt 1 - Use the molar bond enthalpy data in the table to estimate the value of AHfor the equation Bond kJ.mol-1 kJ. mol-1 890 464 0-H 0-0 CH,() + 4C1,C®) CCI (8) + 4HCI(8) 142 390 159 The bonding in the molecules is shown. 730 Bond CEN N-H N-N NON NEN F-F CI-CI Br-Br H-H H-F + CC CHC CHCI 418 945 155 243 192 615 811 414 -906 KJ.mol 435 565 439 131...
Question 9 (8 points) Which molecule has polar bonds but is overall nonpolar? SO3 H₂S 03 SO2 Question 10 (8 points) Which statement best describes the bond length(s) in the nitrite ion (shown)? The bond length of N-O is 136 pm and N-O is 122 pm. O: There are two bonds lengths where one bond is 136 pm, and the other is 122 pm. There is one bond length of 129 pm. There are two bonds lengths where the bonds...
Question 5 (4 points) What is the standard molar heat of solution for solid calcium bromide (CaBr2) given the standard enthalpy of formation data below? CaBrz(s) → Ca2+ (aq) + 2 Br(aq) AHºf of CaBrz(s) is -682.8 kJ.mol-1 AH° of Ca2+(aq) is -542.83 kJ.mol-1 AH, Of Br(aq) is -121.55 kJ mol-1 - 1347.2 kJ.mol-1 -103.1 kJ-mol-1 -21.6 kJ-mol-1 +21.6 kJ-mol-1 Question 6 (4 points) In a 10.0 L vessel at 100.0°C, 10.0 grams of an unknown gas exert a pressure...
please help
Question 38 (8 points) What element is oxidized and what is the oxidizing agent in the reaction below? Fe2O3(s) + 3CO(g) - 2Fe(s) + 3CO2(e) Iron is oxidized, and the oxidizing agent is Fe2O3. Carbon is oxidized, and the oxidizing agent is Fe2O3. Iron is oxidized, and the oxidizing agent is CO. Carbon is oxidized, and the oxidizing agent is Co. Question 39 (8 points) What isotope is depicted in the figure? Key =proton =neutron lithium-7 helium-3 helium-4...
Using the equations Ca (s)2 O (g) Сао (s) 2 H2 (g) Determine the enthalpy for the reaction Са (s) + 2 H0 () — Са(ОН)2 (s) + H2 (9). CaO (s) AH° = -635 kJ/mol -64 kJ/mol H2O ()Ca(OH)2 (s) AH O2 (g)2 H2O (I) AH° = -572 kJ/mol kJ/mol 1 2 3 4 6 C 5 7 8 9 +/- 0 x 100 LO 11.01 g of MgSO4 is placed into 100.0 mL of water. The water's temperature...
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...
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...
The specific heat of iron is 0.450 J/g°C
1127 Chapter 6 Discussion Problems 1. How much energy must be transferred to raise the temperature of a cup of coffee (250 mL) from 20.5°C 10 95.6°C? Assume density and specific heat is the same as Water 4.16 Ig/ml 2. An 38.5 g piece of iron with temperature 78.8°C is placed in a beaker containing 244 g of water at 18.8°C. When thermal equilibrium is reached, what is the final temperature? Assume...
< Question 11 of 14 > In a constant-pressure calorimeter, 75.0 mL of 0.920 M H2SO4 was added to 75.0 mL of 0.300 M NaOH. The reaction caused the temperature of the solution to rise from 21.12 °C to 23.16 °C. If the solution has the same density and specific heat as water (1.00 g/mL and 4.184 J/(g · °C), respectively), what is AH for this reaction (per mole of H0 produced)? Assume that the total volume is the sum...
QUESTION 19 3 points S In the reaction Mg0(s) → Mg(s) + + 0.502(g) the enthalpy change AH*) is +602(AHP) kj mol. 1 and the entropy change (A5) is +109J k-1 mor1. Explain if the reaction is feasible at 1000K or 6000K? Berenrenh Arial
QUESTION 19 3 points S In the reaction Mg0(s) → Mg(s) + + 0.502(g) the enthalpy change AH*) is +602(AHP) kj mol. 1 and the entropy change (A5) is +109J k-1 mor1. Explain if the reaction...
Question 16 of 29 > Attempt 1 - Use the molar bond enthalpy data in the table to estimate the value of AHfor the equation Bond kJ.mol-1 kJ. mol-1 890 464 0-H 0-0 CH,() + 4C1,C®) CCI (8) + 4HCI(8) 142 390 159 The bonding in the molecules is shown. 730 Bond CEN N-H N-N NON NEN F-F CI-CI Br-Br H-H H-F + CC CHC CHCI 418 945 155 243 192 615 811 414 -906 KJ.mol 435 565 439 131...
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