Homework Answers
Molar heat of combustion = -2136.7 kJ/mol
![Heat absorbed by calorimeter? Q cal = Cal at = 747J/K X 32.48°C-23063°C = 747 J/K *[32:48+27315)K-(2363+273:15)*] = 747 J/K](http://img.homeworklib.com/questions/73990780-0f6b-11ea-b6d2-059162f0195f.png?x-oss-process=image/resize,w_560)
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7. A 2.529-g sample of glutaric acid, CsH.O.(132.12 g/mol) was burned in a bomb calorimeter with excess oxygen. The...
A 1.764-g sample of heptanoic acid, C7H14O2 (130.19 g/mol) was burned in a bomb calorimeter with...
A 1.764-g sample of heptanoic acid, C7H14O2 (130.19 g/mol) was burned in a bomb calorimeter with excess oxygen. The temperature of the calorimeter and the water before combustion was 23.68 °C; after combustion the calorimeter and the water had a temperature of 32.12 °C. The calorimeter had a heat capacity of 500 J/K, and contained 1.462 kg of water. Use these data to calculate the molar heat of combustion (in kJ) of heptanoic acid.
7. A 2.548-9 sample of valine, CsH ,NO, (117.15 g/mol) was burned in a bomb calorimeter...
7. A 2.548-9 sample of valine, CsH ,NO, (117.15 g/mol) was burned in a bomb calorimeter with excess oxygen. The temperature of the calorimeter and the water before combustion was 18.42 °C, after combustion the calorimeter and the water had a temperature of 29.13 °C. The calorimeter had a heat capacity of 633 J/K, and contained 1.255 kg of water. Use these data to calculate the molar heat of combustion (in kJ) of valine.
7. A 2.053-g sample of ethylene glycol, CH.02 (62.07 g/mol) was burned in a bomb calorimeter...
7. A 2.053-g sample of ethylene glycol, CH.02 (62.07 g/mol) was burned in a bomb calorimeter with excess oxygen. The temperature of the calorimeter and the water before combustion was 16.49 °C; after combustion the calorimeter and the water had a temperature of 23.12 °C. The calorimeter had a heat capacity of 567 J/K, and contained 1.316 kg of water. Use these data to calculate the molar heat of combustion (in kJ) of ethylene glycol.
The heat liberated by the combustion of glutaric acid is 2154 KJ/mol. A 1.50 g sample...
The heat liberated by the combustion of glutaric acid is 2154 KJ/mol. A 1.50 g sample of glutaric acid is burned in excess O2(g) in a calorimeter that contains 1250 g of water. The temperature of the calorimeter and its contents increases from 20.00C to 23.69 C. What is the heat capacity of the calorimenter (J/C)?
A 1.9862-g sample of benzoic acid burns in an excess of oxygen, in a bomb calorimeter. The temperature of the calorimet...
A 1.9862-g sample of benzoic acid burns in an excess of oxygen, in a bomb calorimeter. The temperature of the calorimeter rises from 24.94 C to 28.77 C. The calorimeter contains 2000.0 g of H2O, and the heat capacity of the calorimeter (excluding the water, but including the bomb, thermometer, and all mechanical parts) has the value C(cal) = 5.35 kJ/C. Use the given information to find the molar heat of combustion of benzoic acid (M(benzoic acid) = 122.1 g/mol).
Thermometer Ignition wires heat sample Stirrer A bomb calorimeter, or a constant volume calorimeter, is a...
Thermometer Ignition wires heat sample Stirrer A bomb calorimeter, or a constant volume calorimeter, is a device often used to determine the heat of combustion of fuels and the energy content of foods. 2req In an experiment, a 1.1140 g sample of glutaric acid (C4H902) is burned completely in a bomb calorimeter. The calorimeter is surrounded by 1.249x109 g of water. During the combustion the temperature increases from 23.18 to 26.33 °C. The heat capacity of water is 4.184 J...
A 0.1785 g sample of magnesium was burned in an oxygen bomb calorimeter. The total heat...
A 0.1785 g sample of magnesium was burned in an oxygen bomb calorimeter. The total heat capacity of the calorimeter plus water was 5,760 J/C. If the temperature rise of the calorimeter with water was 1.25*C, calculate the enthalpy of combustion(in kJ/mol) of magnesium. Mg(s) + 1/2O2(g) -> MgO(s) Write answer to three significant figures. Numeric Response
A 0.375-g sample of 2-naphthylacetic acid (C12H1002) is burned in a bomb calorimeter and the temperature increases from...
A 0.375-g sample of 2-naphthylacetic acid (C12H1002) is burned in a bomb calorimeter and the temperature increases from 25.80 °C to 28.00 °C. The calorimeter contains 1.06x103 g of water and the bomb has a heat capacity of 903 J/°C. Based on this experiment, calculate AE for the combustion reaction per mole of 2-naphthylacetic acid burned (kJ/mol). C12H1002()+27/2 O2(g) —>12 CO2(g) +5 H2O(1) AE = kJ/mol
A 1.20-g sample of maleic acid (C4H4O4) is burned in a bomb calorimeter and the temperature...
A 1.20-g sample of maleic acid (C4H4O4) is burned in a bomb calorimeter and the temperature increases from 24.70 °C to 27.41 °C. The calorimeter contains 1000 g of water and the bomb has a heat capacity of 839 J/°C. The heat capacity of water is 4.184 J g-1°C-1. Based on this experiment, calculate ΔE for the combustion reaction per mole of maleic acid burned.
A0.906-g sample of glutaric acid (CsHgO) is bumed in a bomb calorimeter and the temperature increases...
A0.906-g sample of glutaric acid (CsHgO) is bumed in a bomb calorimeter and the temperature increases from 24.30 "C to 27.10C The calorimeter contains 1.03-10 g of water and the bomb has a heat capacity of 912 1C Based on this experiment, caleulate AE for the combustion reaction per mole of glutaric acid bamed dlmol CslyO) 5 0a)s Co(g)+4H,0) AE klmol
7. A 2.548-9 sample of valine, CsH ,NO, (117.15 g/mol) was burned in a bomb calorimeter with excess oxygen. The temperature of the calorimeter and the water before combustion was 18.42 °C, after combustion the calorimeter and the water had a temperature of 29.13 °C. The calorimeter had a heat capacity of 633 J/K, and contained 1.255 kg of water. Use these data to calculate the molar heat of combustion (in kJ) of valine.
7. A 2.053-g sample of ethylene glycol, CH.02 (62.07 g/mol) was burned in a bomb calorimeter with excess oxygen. The temperature of the calorimeter and the water before combustion was 16.49 °C; after combustion the calorimeter and the water had a temperature of 23.12 °C. The calorimeter had a heat capacity of 567 J/K, and contained 1.316 kg of water. Use these data to calculate the molar heat of combustion (in kJ) of ethylene glycol.
Thermometer Ignition wires heat sample Stirrer A bomb calorimeter, or a constant volume calorimeter, is a device often used to determine the heat of combustion of fuels and the energy content of foods. 2req In an experiment, a 1.1140 g sample of glutaric acid (C4H902) is burned completely in a bomb calorimeter. The calorimeter is surrounded by 1.249x109 g of water. During the combustion the temperature increases from 23.18 to 26.33 °C. The heat capacity of water is 4.184 J...
A 0.1785 g sample of magnesium was burned in an oxygen bomb calorimeter. The total heat capacity of the calorimeter plus water was 5,760 J/C. If the temperature rise of the calorimeter with water was 1.25*C, calculate the enthalpy of combustion(in kJ/mol) of magnesium. Mg(s) + 1/2O2(g) -> MgO(s) Write answer to three significant figures. Numeric Response
A 0.375-g sample of 2-naphthylacetic acid (C12H1002) is burned in a bomb calorimeter and the temperature increases from 25.80 °C to 28.00 °C. The calorimeter contains 1.06x103 g of water and the bomb has a heat capacity of 903 J/°C. Based on this experiment, calculate AE for the combustion reaction per mole of 2-naphthylacetic acid burned (kJ/mol). C12H1002()+27/2 O2(g) —>12 CO2(g) +5 H2O(1) AE = kJ/mol
A0.906-g sample of glutaric acid (CsHgO) is bumed in a bomb calorimeter and the temperature increases from 24.30 "C to 27.10C The calorimeter contains 1.03-10 g of water and the bomb has a heat capacity of 912 1C Based on this experiment, caleulate AE for the combustion reaction per mole of glutaric acid bamed dlmol CslyO) 5 0a)s Co(g)+4H,0) AE klmol
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