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What does the negative sign on the value of an enthalpy of formation indicate?
A negative enthalpy of formation indicates that energy is evolved.
Does energy always released during ionization?
During the formation of anions (negatigely charged ions) energy is released. During the formation of cations (positively charged ions) energy is absorbed.
What best describe the enthalpy of formation of a substance?
The enthalpy of formation of a substance is the energy change when a substance is formed from its elements in their standard states. It represents the heat energy released or absorbed during the formation process. A negative value indicates that the reaction is exothermic, while a positive value indicates an endothermic reaction.
How much energy is evolved during the formation of 98.7 g of Fe according to the reaction below?
To determine the energy evolved during the formation of 98.7 g of Fe, we first need to know the specific reaction that produces iron and its corresponding enthalpy change (ΔH). If we assume a specific reaction, such as the reduction of iron ore (Fe2O3), we would use the molar mass of Fe (approximately 55.85 g/mol) to calculate the number of moles in 98.7 g. Then, using the reaction's ΔH, we can multiply the number of moles by the energy change per mole to find the total energy evolved. Please provide the specific reaction and its enthalpy change for a precise calculation.
What energy trans formation occurs during combustion?
Chemical energy is transformed into thermal energy.
How is energy released during the formation of a chemical bond?
Energy is released during the formation of a chemical bond when atoms come together and their electrons rearrange to create a more stable configuration. This process releases energy because the new bond formation results in a lower overall energy state for the atoms involved.
Is energy absorbed during preparation of a mixture?
Depends on the mixture. There are two different reactions when atoms bond: exothermic and endothermic. During an exothermic reaction, energy is given off in the form of heat or light. In a endothermic reaction, energy is absorbed.
What are energy changers?
Chemical reactions usually involve change of heat due to energy absorbed or evolved during reaction.
Which does the electron chain do during cellular respiration?
it provides energy that powers the formation of ATP.
Why is energy released during the formation of chemical bonds?
Energy is released during the formation of chemical bonds because when atoms come together to form bonds, they release energy that was stored in their chemical bonds. This release of energy helps to stabilize the newly formed compound and makes the overall system more stable.
Is energy an compound or mixture?
No, energy is NOT an element, a compound or a mixture.
Which does the eletron transport chain do during cellular respiration?
it provides energy that powers the formation of ATP.
