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![Solution 1 M=5 Given, 50.og 2.42 J/gc. 1 c = cm where, C= heat capacity C= specific heat C = ma mass C= 2.42 x 50.0. C= 121 ]](http://img.homeworklib.com/questions/85dbb8e0-09e8-11eb-8857-d7d234084686.png?x-oss-process=image/resize,w_560)
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7:45 Done 3_77ae582a4c5a5fa3ee34... 1. What is the heat capacity of 50.0 g of ethyl alcohol if...
PROBLEM-SOLVING CLASS ACTIVITY 10 Suppose 0.562 g of graphite is placed in a calorimeter with an excess of oxygen a...
PROBLEM-SOLVING CLASS ACTIVITY 10 Suppose 0.562 g of graphite is placed in a calorimeter with an excess of oxygen at 25.00 °C and 1 atm. Excess o, ensures that all carbon burns to form CO2. The graphite is ignited, and it burns according to the equation: C(graphite). 0269) → () On reaction, the calorimeter temperature rises from 25.00 °C to 25.89 °C. The heat capacity of the calorimeter and its contents was determined in a separate experiment to be 20.7...
A 2.47 g sample of caffeine (C8H10N4O2) burns in a constant-volume calorimeter that has a heat capacity of 7.86 kJ/K. Th...
A 2.47 g sample of caffeine
(C8H10N4O2) burns in a
constant-volume calorimeter that has a heat capacity of 7.86 kJ/K.
The temperature increases from 297.65 K to 305.65 K. Determine the
heat (qv) associated with this reaction.
Now use the data above to find ΔE for the combustion of one mole
of caffeine.
8. A 2.47 g sample of caffeine (C3H10N402) burns in a constant-volume calorimeter that has a heat capacity of 7.86 kJ/K. The temperature increases from 297.65 K...
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...
2) 1.9 g of an unknown hydrocarbon (44 g/mol) burns in bomb calorimeter in excess oxygen. The heat capacity of the...
2) 1.9 g of an unknown hydrocarbon (44 g/mol) burns in bomb calorimeter in excess oxygen. The heat capacity of the calorimeter, Cv, = 5.539 kJ/°C and AT =15.874 ºC. Find AE for this hydrocarbon in kJ/mol. (Hint: This is a bomb calorimeter, where the reaction is happening at constant volume: So, what is zero? How is AE related to q (heat)?) Identify: system = Surrounding =
please answer the full thing 1. What would be the AE (in kJ) for the following...
please answer the full thing
1. What would be the AE (in kJ) for the following reaction if 6.300 moles of H20 were decomposed? 2 H2O + 2H2 + O AE = 483.6 kJ (for reaction as written) 2. The value of AE for the reaction below is -336 kJ. Determine the amount of heat (in kJ) evolved when 13.0 g of HCl is formed. CH4(9) + 3 Cl2(g) - CHCI) + 3HCIO) 3. If 1.00 cal = 4.18 J,...
Heat Capacity and Calorimetry A sample of ethanol, C2H5OH, weighing 2.84 g was burned in an...
Heat Capacity and Calorimetry
A sample of ethanol, C2H5OH, weighing 2.84 g was burned in an
excess of oxygen in a bomb calorimeter. The temperature of the
calorimeter rose from 25C to 33.73C. If the heat capacity of the
calorimeter and contents is 9.63kJ/C, what is the value of q for
burning 1.00 lol of ethanol at constant volume and 25.00C.
Is q equal to U or H?
214e Questions and Problems the enthalpy change when 0.710 mol of calcium...
What is the heat of a reaction with a total reaction mixture volume of 70 5...
What is the heat of a reaction with a total reaction mixture volume of 70 5 mL if the reaction causes a temperature change of 6.4 °C in a calorimeter? Assume that the reaction mixture has a density of 1.00 p/ml. and a specific heat of 4.184 JigC The calorimeter has a heat capacity of 10.0 JC Answer What is the heat, q, in youles transfered by a chemcal reaction to the reservoir of a calorimeter containing 95.0g of dilute...
both questions please 6. A 89.2 g piece of aluminum (which has a molar heat capacity of 24.031/°C-mol) is heated to...
both questions please
6. A 89.2 g piece of aluminum (which has a molar heat capacity of 24.031/°C-mol) is heated to 624°C and dropped into a calorimeter containing water (specific heat capacity of water is 4.18J/gºC) initially at 19.2°C. The final temperature of the water is 135.2°C. Ignoring significant figures, calculate the mass of water in the calorimeter. 7. A single pulse of a laser yields an average of 5.00 x 101 photons with = 633 nm. If melting ice...
6.21) Is the specific heat capacity of a substance an intensive or extensive property? Explain. 6.23) Calculate q when 0...
6.21) Is the specific heat capacity of a substance an
intensive or extensive property? Explain.
6.23) Calculate q when 0.10 g of ice is cooled from
10. °C to -75. °C. (S ice = 2.087 J/g•°C).
6.25) A 27.7 g sample of ethylene glycol, a car
radiator coolant, loses 688 J of heat. What was the initial
temperature of the ethylene glycol if the final temperature is 32.5
°C? (s of ethylene glycol = 2.42 J/g•°C)
6.27) One piece of...
4. How many kJ of heat are released when 85.0 g of NaOH reacts with excess...
4. How many kJ of heat are released when 85.0 g of NaOH reacts with excess H2SO4? H2SO4(aq) + 2NaOH(aq) → Na2SO4(aq) + 2 H2O(l) + 114 kJ 5. 2.50 g of octane, CHis was bumed in a bomb calorimeter causing the temperature to increase from 21.0°C to 35.5°C. The total heat capacity of the calorimeter was 8.33 kJ/°C. Calculate the heat of combustion for the reaction shown below. 2 CH 18(1) + 2502(9) ► 16 CO2(g) + 18 H2O(g)...
PROBLEM-SOLVING CLASS ACTIVITY 10 Suppose 0.562 g of graphite is placed in a calorimeter with an excess of oxygen at 25.00 °C and 1 atm. Excess o, ensures that all carbon burns to form CO2. The graphite is ignited, and it burns according to the equation: C(graphite). 0269) → () On reaction, the calorimeter temperature rises from 25.00 °C to 25.89 °C. The heat capacity of the calorimeter and its contents was determined in a separate experiment to be 20.7...
A 2.47 g sample of caffeine
(C8H10N4O2) burns in a
constant-volume calorimeter that has a heat capacity of 7.86 kJ/K.
The temperature increases from 297.65 K to 305.65 K. Determine the
heat (qv) associated with this reaction.
Now use the data above to find ΔE for the combustion of one mole
of caffeine.
8. A 2.47 g sample of caffeine (C3H10N402) burns in a constant-volume calorimeter that has a heat capacity of 7.86 kJ/K. The temperature increases from 297.65 K...
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...
2) 1.9 g of an unknown hydrocarbon (44 g/mol) burns in bomb calorimeter in excess oxygen. The heat capacity of the calorimeter, Cv, = 5.539 kJ/°C and AT =15.874 ºC. Find AE for this hydrocarbon in kJ/mol. (Hint: This is a bomb calorimeter, where the reaction is happening at constant volume: So, what is zero? How is AE related to q (heat)?) Identify: system = Surrounding =
please answer the full thing
1. What would be the AE (in kJ) for the following reaction if 6.300 moles of H20 were decomposed? 2 H2O + 2H2 + O AE = 483.6 kJ (for reaction as written) 2. The value of AE for the reaction below is -336 kJ. Determine the amount of heat (in kJ) evolved when 13.0 g of HCl is formed. CH4(9) + 3 Cl2(g) - CHCI) + 3HCIO) 3. If 1.00 cal = 4.18 J,...
Heat Capacity and Calorimetry
A sample of ethanol, C2H5OH, weighing 2.84 g was burned in an
excess of oxygen in a bomb calorimeter. The temperature of the
calorimeter rose from 25C to 33.73C. If the heat capacity of the
calorimeter and contents is 9.63kJ/C, what is the value of q for
burning 1.00 lol of ethanol at constant volume and 25.00C.
Is q equal to U or H?
214e Questions and Problems the enthalpy change when 0.710 mol of calcium...
What is the heat of a reaction with a total reaction mixture volume of 70 5 mL if the reaction causes a temperature change of 6.4 °C in a calorimeter? Assume that the reaction mixture has a density of 1.00 p/ml. and a specific heat of 4.184 JigC The calorimeter has a heat capacity of 10.0 JC Answer What is the heat, q, in youles transfered by a chemcal reaction to the reservoir of a calorimeter containing 95.0g of dilute...
both questions please
6. A 89.2 g piece of aluminum (which has a molar heat capacity of 24.031/°C-mol) is heated to 624°C and dropped into a calorimeter containing water (specific heat capacity of water is 4.18J/gºC) initially at 19.2°C. The final temperature of the water is 135.2°C. Ignoring significant figures, calculate the mass of water in the calorimeter. 7. A single pulse of a laser yields an average of 5.00 x 101 photons with = 633 nm. If melting ice...
6.21) Is the specific heat capacity of a substance an
intensive or extensive property? Explain.
6.23) Calculate q when 0.10 g of ice is cooled from
10. °C to -75. °C. (S ice = 2.087 J/g•°C).
6.25) A 27.7 g sample of ethylene glycol, a car
radiator coolant, loses 688 J of heat. What was the initial
temperature of the ethylene glycol if the final temperature is 32.5
°C? (s of ethylene glycol = 2.42 J/g•°C)
6.27) One piece of...
4. How many kJ of heat are released when 85.0 g of NaOH reacts with excess H2SO4? H2SO4(aq) + 2NaOH(aq) → Na2SO4(aq) + 2 H2O(l) + 114 kJ 5. 2.50 g of octane, CHis was bumed in a bomb calorimeter causing the temperature to increase from 21.0°C to 35.5°C. The total heat capacity of the calorimeter was 8.33 kJ/°C. Calculate the heat of combustion for the reaction shown below. 2 CH 18(1) + 2502(9) ► 16 CO2(g) + 18 H2O(g)...
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