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The combustion of methane (CH₄) is an exothermic reaction that releases energy when it reacts with oxygen (O₂) to form carbon dioxide (CO₂) and water (H₂O). The standard enthalpy change of combustion for methane is approximately -802 kJ/mol, indicating that this amount of energy is released per mole of methane combusted. This value can be determined through calorimetry experiments or referenced from thermodynamic tables.
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What is the reactions shows that the formation of CO2 releases 393.5 kJmol?
The reaction that shows the formation of carbon dioxide (CO2) releasing 393.5 kJ/mol is the combustion of carbon in oxygen, represented by the balanced equation: C(s) + O2(g) → CO2(g). This exothermic reaction indicates that when one mole of carbon reacts with oxygen to form carbon dioxide, it releases 393.5 kJ of energy. This energy release is a key factor in various applications, including combustion engines and the generation of heat in industrial processes.
What of the following reactions shows that the formation of CO2 releases 393.5 kJmol?
The reaction that shows the formation of CO2 releasing 393.5 kJ/mol is typically represented as the combustion of carbon or hydrocarbons. For example, the reaction for the combustion of carbon can be written as: [ C(s) + O_2(g) \rightarrow CO_2(g) ] This reaction indicates that the formation of one mole of carbon dioxide from solid carbon and oxygen gas releases 393.5 kJ of energy, demonstrating an exothermic process.
Which f the following reactions shows that the formation of CO2 releases 393.5 kJmol?
The reaction that shows the formation of CO2 releasing 393.5 kJ/mol is the combustion of carbon, represented as: [ C(s) + O_2(g) \rightarrow CO_2(g) ] In this exothermic reaction, when one mole of carbon reacts with oxygen to form carbon dioxide, it releases 393.5 kJ of energy, indicating that the formation of CO2 is energetically favorable.
How many kJ of energy are required to melt 30.7 g of ice The heat of fusion of water is 6.02 kJmol. The temperature remains constant at 0 and degC. kJ?
10,267 kJ are needed
Constants for water Hvap 40.65 kJmol Hf -285.83 kJmol Hfusion 6.03 kJmol specific heat 4.186 JgC molar mass 18.02 g How much energy is generated from freezing 2.5 g water?
To calculate the energy generated from freezing 2.5 g of water, we use the heat of fusion (Hfusion) of water, which is 6.03 kJ/mol. First, convert the mass of water to moles: (2.5 , \text{g} \div 18.02 , \text{g/mol} \approx 0.1386 , \text{mol}). Then, multiply the number of moles by the heat of fusion: (0.1386 , \text{mol} \times 6.03 , \text{kJ/mol} \approx 0.835 , \text{kJ}). Thus, approximately 0.835 kJ of energy is released when 2.5 g of water freezes.
What is an example that shows that the combustion of methane produces 802 kJmol of energy?
The enthalpy of combustion is determined by calorimetry.
What is the reactions shows that the formation of CO2 releases 393.5 kJmol?
The reaction that shows the formation of carbon dioxide (CO2) releasing 393.5 kJ/mol is the combustion of carbon in oxygen, represented by the balanced equation: C(s) + O2(g) → CO2(g). This exothermic reaction indicates that when one mole of carbon reacts with oxygen to form carbon dioxide, it releases 393.5 kJ of energy. This energy release is a key factor in various applications, including combustion engines and the generation of heat in industrial processes.
An atom has a first ionization energy of 496 kJmol and a second ionization energy of 4560 kJmol What group of the periodic table would the atom be in?
The significant jump in ionization energy from the first to the second indicates the removal of an electron from a filled energy level. This suggests the atom is in the second group of the periodic table, since elements in this group have a filled outer s sublevel before starting to fill the p sublevel in the subsequent period.
What of the following reactions shows that the formation of CO2 releases 393.5 kJmol?
The reaction that shows the formation of CO2 releasing 393.5 kJ/mol is typically represented as the combustion of carbon or hydrocarbons. For example, the reaction for the combustion of carbon can be written as: [ C(s) + O_2(g) \rightarrow CO_2(g) ] This reaction indicates that the formation of one mole of carbon dioxide from solid carbon and oxygen gas releases 393.5 kJ of energy, demonstrating an exothermic process.
Which energy profile best shows that the Hf of H2S is -20.6 kJmol?
Energy profile A
The ionization energy for sodium is 496 kJmol The electron affinity for chlorine is -349 kJmol what is the enthalpy?
The enthalpy change for forming sodium chloride from its elements can be calculated using the equation: Enthalpy change = Ionization energy of sodium + Electron affinity of chlorine. Plugging in the values, we get: 496 kJ/mol + (-349 kJ/mol) = 147 kJ/mol. Therefore, the enthalpy change for forming sodium chloride is 147 kJ/mol.
How many kJ of energy are required to melt 30.7 g of ice The heat of fusion of water is 6.02 kJmol. The temperature remains constant at 0 and degC. kJ?
10,267 kJ are needed
Constants for water Hvap 40.65 kJmol Hf -285.83 kJmol Hfusion 6.03 kJmol specific heat 4.186 JgC molar mass 18.02 g How much energy is generated from freezing 2.5 g water?
To calculate the energy generated from freezing 2.5 g of water, we use the heat of fusion (Hfusion) of water, which is 6.03 kJ/mol. First, convert the mass of water to moles: (2.5 , \text{g} \div 18.02 , \text{g/mol} \approx 0.1386 , \text{mol}). Then, multiply the number of moles by the heat of fusion: (0.1386 , \text{mol} \times 6.03 , \text{kJ/mol} \approx 0.835 , \text{kJ}). Thus, approximately 0.835 kJ of energy is released when 2.5 g of water freezes.
What energy profile best shows that the formation of NO2 requires 33.1 kJmol?
Brainly says it’s energy profile B for APEX please correct if i’m wrong.
What can be said about a reaction with H 620 kJmol and S -0.46 kJ(molK)?
it can never be spontanious
What can be said about a reaction with triangle H 620 kJmol and triangle S -046 kJ(mol.K)?
it is never spontaneous
What statement describes a reaction at 298 K if H 31 kJmol S 0.093 kJ(molK)?
It is not spontaneous.
