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Styrene, CgHg, is one of the substances used in the production of synthetic rubber. When styrene...
When styrene C8H8 burns in oxygen to form carbon dioxide and liquid water under standard-state conditions...
When styrene C8H8 burns in oxygen to form carbon dioxide and liquid water under standard-state conditions at 25°C, 42.62 kJ are released per gram of styrene. Find the standard enthalpy of formation of styrene at 25°C. (Given: ΔH°f[CO2(g)] = –393.5 kJ/mol, ΔH°f[H2O(l)] = –285.8 kJ/mol)
2. We add 4.158 kJ of heat to a calorimeter that contains 55.0 g of water....
2. We add 4.158 kJ of heat to a calorimeter that contains 55.0 g of water. The temperature of the water and the calorimeter, originally at 22.34°C, increases to 38.74°C. Calculate the heat capacity of the calorimeter in /°C. The specific heat of water is 4.184 J/g °C. 3. What is the standard enthalpy change for the following reaction? N2H (1) + 2NO2(g) → 2N2O(g) + 2H2O(1) AH (kJ/mol) N2H4(1) +50.6 NO2(g) +33.1 N2O(g) +82.1 H20(1) -285.8
3. When 10 mL of 2.0 M HCl is combined with 30 mL of 0.667 M...
3. When 10 mL of 2.0 M HCl is combined with 30 mL of 0.667 M NAOH a temperature change of 6.9 °C was observed. How much heat was given off per mole of water produced? ASsume the volumes are additive and that this NaCl solution has a density of 1.02 g/mL and a specific heat of 4.00 J/g-C. 2. How much heat is needed to change 32 g of 4.A 0.865 g sample of candy is burned in a...
A coffee cup calorimeter was used to measure the heat of solution, the change in enthalpy...
A coffee cup calorimeter was used to measure the heat of solution, the change in enthalpy that occurs when a solid dissolves in water. A 10.0 g sample of an ionic compound with a molar mass of 190.0 g/mol was added to a sample of deionized water to produce 60.0 grams of solution. After stirring and dissolving the solid, the temperature was found to change from 25.00 °C to 23.86 °C. Calculate the enthalpy of solution, AH coln, per mole...
When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution...
When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. Thermometer In the laboratory a general chemistry student finds that when 9.66 g of CSCI(S) are dissolved in 106.80 g of water, the temperature of the solution drops from 22.55 to 19.99 °C. Cardboard or Styrofoam lid The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate...
Given the following heat of formation values, calculate the heat of reaction for the following: C3H8(g)...
Given the following heat of formation values, calculate the heat of reaction for the following: C3H8(g) + O2(g) CO2(g) + H2O(1). AfH values in kJ/mol: C3H8(g): -103.8, O2(g): 0, CO2(g): -393.5, H2O(l): -285.8. 3.613 x 102 kJ/mol -2.220 103 kJ/mol 1.413* 102 kJ/mol -5.755 x 102 kJ/mol If a lighter contains 4.0 mL of liquid butane (density of butane = 0.8 g/cm3), how much heat can we get out of it, from the combustion of butane? 2 C4H 10(g) +...
3) Titanium dioxide is synthesized in the laboratory by hydrolysis, using the following reaction:...
3) Titanium dioxide is synthesized in the laboratory by hydrolysis, using the following reaction: н,--763 187.6 -945 -92.31 What change in internal energy would occur at 298K if 1 mol of TiC4) were added to H20(0) and all of the HCI evolved as gas? 4) Calculate the enthalpy of formation of acetylene: Given: 2C2H2lg)+502)4CO2)2H2 2599 kJ 2H2 O 2H20 393.5 k 285.8 kJ 5) The following question refers to the enthalpy of combustion of styrene monomer, CHa There should be...
if u can show how u do each one, that would be amazing! How much heat...
if u can show how u do each one, that would be
amazing!
How much heat is required to convert 90 g of ice at - 40.0°C into water at 60.0°C? The specific heats (Cs) of ice, water, and steam are 2.09 J/gK, 4.18 J/gK, and 1.84 J/gK, respectively. For H0 AH A) 60.1 kJ = 6.01 kJ/mol, and AH B) 18.8 kJ -40.67 kJ/mol. C) 45.1 kJ D) 37.6 kJ E) 30.5 kJ 11. What is correct for a...
please help When a solid dissolves in water, heat may be evolved or absorbed. The heat...
please help
When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. In the laboratory a general chemistry student finds that when 0.85 g of CaCl2(s) are dissolved in 100.10 g of water, the temperature of the solution increases from 24.36 to 25.89 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be...
A coffee cup calorimeter was used to measure the heat of solution, the change in enthalpy...
A coffee cup calorimeter was used to measure the heat of solution, the change in enthalpy that occurs when a solid dissolves in water. A 10.0 g sample of an ionic compound with a molar mass of 110.0 g/mol was added to a sample of deionized water to produce 60.0 grams of solution. After stirring and dissolving the solid, the temperature was found to change from 25.00 C to 23.83 C. Calculate the enthalpy of solution, AH soln per mole...
2. We add 4.158 kJ of heat to a calorimeter that contains 55.0 g of water. The temperature of the water and the calorimeter, originally at 22.34°C, increases to 38.74°C. Calculate the heat capacity of the calorimeter in /°C. The specific heat of water is 4.184 J/g °C. 3. What is the standard enthalpy change for the following reaction? N2H (1) + 2NO2(g) → 2N2O(g) + 2H2O(1) AH (kJ/mol) N2H4(1) +50.6 NO2(g) +33.1 N2O(g) +82.1 H20(1) -285.8
3. When 10 mL of 2.0 M HCl is combined with 30 mL of 0.667 M NAOH a temperature change of 6.9 °C was observed. How much heat was given off per mole of water produced? ASsume the volumes are additive and that this NaCl solution has a density of 1.02 g/mL and a specific heat of 4.00 J/g-C. 2. How much heat is needed to change 32 g of 4.A 0.865 g sample of candy is burned in a...
A coffee cup calorimeter was used to measure the heat of solution, the change in enthalpy that occurs when a solid dissolves in water. A 10.0 g sample of an ionic compound with a molar mass of 190.0 g/mol was added to a sample of deionized water to produce 60.0 grams of solution. After stirring and dissolving the solid, the temperature was found to change from 25.00 °C to 23.86 °C. Calculate the enthalpy of solution, AH coln, per mole...
When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. Thermometer In the laboratory a general chemistry student finds that when 9.66 g of CSCI(S) are dissolved in 106.80 g of water, the temperature of the solution drops from 22.55 to 19.99 °C. Cardboard or Styrofoam lid The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate...
Given the following heat of formation values, calculate the heat of reaction for the following: C3H8(g) + O2(g) CO2(g) + H2O(1). AfH values in kJ/mol: C3H8(g): -103.8, O2(g): 0, CO2(g): -393.5, H2O(l): -285.8. 3.613 x 102 kJ/mol -2.220 103 kJ/mol 1.413* 102 kJ/mol -5.755 x 102 kJ/mol If a lighter contains 4.0 mL of liquid butane (density of butane = 0.8 g/cm3), how much heat can we get out of it, from the combustion of butane? 2 C4H 10(g) +...
3) Titanium dioxide is synthesized in the laboratory by hydrolysis, using the following reaction: н,--763 187.6 -945 -92.31 What change in internal energy would occur at 298K if 1 mol of TiC4) were added to H20(0) and all of the HCI evolved as gas? 4) Calculate the enthalpy of formation of acetylene: Given: 2C2H2lg)+502)4CO2)2H2 2599 kJ 2H2 O 2H20 393.5 k 285.8 kJ 5) The following question refers to the enthalpy of combustion of styrene monomer, CHa There should be...
if u can show how u do each one, that would be
amazing!
How much heat is required to convert 90 g of ice at - 40.0°C into water at 60.0°C? The specific heats (Cs) of ice, water, and steam are 2.09 J/gK, 4.18 J/gK, and 1.84 J/gK, respectively. For H0 AH A) 60.1 kJ = 6.01 kJ/mol, and AH B) 18.8 kJ -40.67 kJ/mol. C) 45.1 kJ D) 37.6 kJ E) 30.5 kJ 11. What is correct for a...
please help
When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. In the laboratory a general chemistry student finds that when 0.85 g of CaCl2(s) are dissolved in 100.10 g of water, the temperature of the solution increases from 24.36 to 25.89 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be...
A coffee cup calorimeter was used to measure the heat of solution, the change in enthalpy that occurs when a solid dissolves in water. A 10.0 g sample of an ionic compound with a molar mass of 110.0 g/mol was added to a sample of deionized water to produce 60.0 grams of solution. After stirring and dissolving the solid, the temperature was found to change from 25.00 C to 23.83 C. Calculate the enthalpy of solution, AH soln per mole...
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