For the chemical reaction Ca (s) + ½ O₂ (g) → CaO (s) ∆H° = -635 kJ/mol. What is the enthalpy for the reaction 2 CaO (s) → 2 Ca (s) + O₂ (g)?  please write your answer in kJ/mol

Q: A student burns a 0.452 g sample of naphthalene, C10H8, in a bomb calorimeter. The combustion…

A: Given: Mass of naphthalene i.e C10H8 burned = 0.452 g Change in temperature of calorimeter = 2.961…

Q: The change (delta) E of a system that absorbs 12.4 J of heat and does 4.2 J of work on the…

A: Given that, ∆H = 12.4 J w=4.2 J ∆E = ?

Q: One piece of copper jewelry at 105°C has exactly twice the mass of another piece, which is at…

A: Given data:

Q: a) Combustion of 1 mole of butane gas, C4H10 involves 2874 kJ of heat. (i) Write a thermochemical…

A: i)   Thermochemical equation for the combustion of butane is,       C4H10 + 132O2 →∆ 4CO2 + 5H2O…

Q: Nitric oxide (NO) can be formed from nitrogen, hydrogen and oxygen in two steps. In the first step,…

A:

Q: Nitric oxide (NO) can be formed from nitrogen, hydrogen and oxygen in two steps. In the first step,…

A: Let us consider; N2(g)+3H2(g)→2NH3(g)                             ;   ∆H1=-92kJ…

Q: 1. Write a balanced chemical reaction for the combustion of methanol to CO2 and  H20. A.. Calculate…

A: ∆The balanced chemical reaction for the combustion of methanol to form CO2(g) and H2O(l) is given by…

Q: What is the mass of a silver coin if 5.2 J is required to raise its temperature from 21.0 to 25.0…

A: Given :: Heat q=5.2 J Initial temperature T1=21.0 ℃ Final temperature T2= 25.0 ℃ Specific heat of…

Q: Consider the following reaction equation of combustion of glucose, C6H12O6: a. Calculate the…

A: Mass of Glucose = 5.25 g C6H12O6 (s) + 6O2(g) ------> 6CO2(g) + 6H2O(g)

Q: THERMODYNAMICS: The combustion of 1.00 mol of glucose (C6H1206) liberates 2820 kJ of heat. If 1.7 g…

A:

Q: An engineering student wants to study the heat transfer between a 50 g of heated block of iron (cFe…

A:

Q: The table lists the specific heat capacities of select substances. Substance Specific heat…

A: The specific heat capacity is calculated using formula,

Q: Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen…

A: The first chemical equation is, N2g+3H2g→2NH3g       ∆H=-92 kJ......(1) The second chemical equation…

Q: Dimethyl ether, a useful organic solvent, is prepared in two steps. In the first step, carbon…

A: According to Hess's law  The enthalpy of a reaction is the same whether if it takes place in one…

Q: Ammonia burns in the presence of a copper catalyst to form nitrogen gas. 4NH3 (g) + 302(g) → 2N2 (g)…

A:

Q: The work done to compress a gas is 67.0 J. As a result, 29.0 J of heat is given off to the…

A: Given, work done, w = +67.0 J Heat, q = -29.0 J

Q: Pls help ASAP

A:

Q: Methanol, CH3OH, is a possible fuel for automobiles. Energy is evolved in its combustion with…

A:

Q: A sample of water of unknown mass undergoes a temperature change from 68.09°C to 72.61°C with a…

A: Given, a sample of water of unknown mass. undergoes a temperature change from 68.09°C to 72.61°Cwith…

Q: A 109.9 g sample of beryllium experiences a temperature change of -71.48 °C while releasing 1. 242…

A: Note: As per the guidelines solution of first questions has been made. For the expert solution of…

Q: . A 0.888 g sample of pentane, CSH12 is burned in a calorimeter with a specific heat capacity of…

A: Given: Mass of water = 1.20 Kg = 1200 g                                      (Since 1 Kg = 1000 g)…

Q: An engineering student wants to study the heat transfer between a 50 g of heated block of iron (cFe…

A: Specific Heat capacity: The amount of heat required to increase the temperature of one gram of a…

Q: The enthalpy change for Photosynthesis can be represented as the following thermochemical equation.…

A: Photosynthesis is the chemical process where the plant absorbs sunlight and converts into a glucose…

Q: Consider the following thermochemical equation: 2 Mg(s) + O2(g) --> 2 MgO(s) ∆H° = –1204 kJ What…

A: Hess' law: Sum of standard enthalpy of formation of reactant is subtract from Sum of standard…

Q: Nitric oxide (NO) can be formed from nitrogen, hydrogen and oxygen in two steps. In the first step,…

A: The total change in enthalpy for the solution is the sum of all changes regardless of the distinct…

Q: Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen…

A: We have to calculate the net change in enthalpy for the formation of one mole of nitric acid.

Q: A piece of unknown substance weighs 44.7 g and requires 2110 J to increase its temperature from…

A:

Q: Ammonia burns in the presence of a copper catalyst to form nitrogen gas. 4NH3 (g) +302(g) 2N2 (g) +…

A: Given chemical Reaction :- 4NH3 + 3O2 ---> 2N2 + 6H2O  ∆H = -1267 kJ  Molar mass of NH3 = 17.031…

Q: (Q6) Nitroglycerine combustion takes place in a bomb calorimeter that is insulated by 639.6 grams of…

A:

Q: p **** THERMODYNAMICS: The combustion of 1.00 mol of glucose (C6H1206) liberates 2820 kJ of heat. If…

A:

Q: Ozone, O3(g), forms from oxygen, O2(g), by an endothermic process. Ultraviolet radiation is the…

A: the standared enthalpy of formation of ozone is equal to the enthaply of formation of 1 mole of…

Q: THERMODYNAMICS: The combustion of 1.00 mol of glucose (C6H1206) liberates 2820 kJ of heat. If 1.98 g…

A:

Q: Methanol, CH3OH(g), is a possible automobile fuel. The alcohol produces energy in a combustion…

A:

Q: THERMODYNAMICS: The combustion of 1.00 mol of glucose (C6H1206) liberates 2820 kJ of heat. If 1.77 g…

A: We will first calculate heat released by given amount of glucose, then calculate heat capacity.

Q: An engineering student wants to study the heat transfer between a 50 g of heated block of iron (cFe…

A:

Q: Ammonia burns in the presence of a copper catalyst to form nitrogen gas. 4 NH3(g) + 3 O2(g) → 2…

A: The terms specifying heat gain/loss during products' generation in any thermochemical reaction is…

Q: Nitric oxide gas, NO(g), can be oxidized in air to produce nitrogen dioxide gas, NO,(g): 2 NO(g) +…

A: The reactions given are, 1) O2 (g) → 2 O (g)…

Q: Calculate the molar enthalpy change of H2O(1) when liquid water is heated from 41.7°C to 76.2°C.

A: Given :  Initial  temperature  = 41.7°C  Final temperature = 76.2°C  Molar mass of H2O(l) = 18 gm/…

Q: What mass of natural gas (CH4) must you burn to emit 267kJ of heat? CH4(g)+2O2(g)=CO2(g)+2H20(g)…

A: Number of moles of methane reacted can be calculated as follows,

Q: nitrogen and hydrogen react to form ammonia: N2(g) + 3 H2(g) 2 NH3(g) AH=-92. kJ In the second step,…

A: The question is based on the concept of chemical thermodynamics. it involves the application of Hess…

Q: Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen…

A: Given data is as follows: N2(g) + 3H2(g) → 2NH3(g)                              ∆H1=-92 kJ…

Q: In an experiment, 138 g of graphite is heated to 90.0°C and then quickly transferred to 150.0 g of…

A: The heat released by graphite (q1) is determined using equation (1) as follows:

Q: Nitric oxide (NO) can be formed from nitrogen, hydrogen and oxygen in two steps. In the first step,…

A: To solve this problem we will use the given two thermochemical equations to get the enthalpy of…

Q: THERMODYNAMICS: The combustion of 1.00 mol of glucose (C6H1206) liberates 2820 kJ of heat. If 1.14 g…

A: We will first calculate moles of glucose, then calculate hear capacity of calorimeter.

Q: Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen…

A:

Q: If a system is given 60 J of heat and lifts the lid of the container 3 m with a force of 5 N, what…

A: Applying first law of thermodynamics and work done by system  ∆U = Q-w  &  W= F×r

Q: Benzene (C6H6) burns in air to produce carbon dioxide and liquid water. Calculate the heat released…

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Q: When N2(g) react with O2(g) to form N20(g) according to the following equation, energy is absorbed…

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Q: 1 What is the symbol for the enthalpy change that occurs during the phase change of a substance from…

A: We have to tell which option is correct

Q: Nitroglycerine combustion takes place in a bomb calorimeter that is insulated by 731.8 grams of…

A: Each chemical reaction is associated with a certain amount of energy. When the heat is liberated…