The stability of a compound is inversely related to its heat of formation; a compound with a lower heat of formation is typically more stable. This is because a lower heat of formation indicates that the compound is formed from its elements with less energy input, suggesting strong bonds and a favorable arrangement. Conversely, a high heat of formation indicates less stability, as it implies that more energy is required to form the compound from its constituent elements. Thus, stable compounds generally have negative or low heat of formation values.
No, an input of energy is not required for nuclear decay to happen in an atom. Nuclear decay is a spontaneous process that occurs when an unstable nucleus emits particles or energy to become more stable.
Energy is not required for passive transport to occur. Passive transport processes such as diffusion and osmosis rely on the inherent kinetic energy of molecules to move from an area of high concentration to an area of low concentration without the need for external energy input.
The formation of nitrogen dioxide (NO2) from its elemental constituents can be represented by the reaction: N2(g) + 2 O2(g) → 2 NO2(g). The enthalpy change for this reaction indicates that 33.1 kJ/mol of energy is required to form NO2. This value reflects the energy needed to break the bonds in the reactants and form the bonds in the product. Thus, the positive enthalpy change signifies that the reaction is endothermic, necessitating an input of energy for the formation of NO2.
The requirements of passive transport through the cell membrane (phospholipid bilayer) of an animal cell are that the molecule is non-polar or small enough to pass by the non-polar phospholipid tails. This is because, for there to be passive transport, no energy must be used to transport the molecule from outside of the cell to inside.
Active Transport
Active transport takes place when an input of energy is required to move material through a cell membrane. This process uses energy to move molecules against their concentration gradient, often utilizing specific carrier proteins to facilitate the transport.
energy input
- Energetically favorable means that the input of energy is equal to or less than the output of energy. - The output of energy is equal to or greater than the input of energy. - The reaction is spontaneous. When molecules/compounds/proteins/steroids/lipids/etc are made, bonds are broken and bonds are formed. Breaking a bond always requires an input of energy (endothermic). The formation of a bond, however, always releases energy (exothermic). If the input of energy required to break a bond exceeds the release of energy to form a bond, then the formation of that bond/molecule/compound/protein/steroid/lipid/etc is not favorable. In other words, if I have to pay a worker more than his work is worth, then his employment is not favorable. For example, the formation of an ionic bond between lithium and chloride is energetically favorable because the input of energy required to remove an electron from lithium (ionization energy) is less than the energy released (electron affinity) when chloride gains an electron.
Osmosis is the diffusion of water across a membrane, and does not require the input of energy. Active transport requires energy input.
- Energetically favorable means that the input of energy is equal to or less than the output of energy. - The output of energy is equal to or greater than the input of energy. - The reaction is spontaneous. When molecules/compounds/proteins/steroids/lipids/etc are made, bonds are broken and bonds are formed. Breaking a bond always requires an input of energy (endothermic). The formation of a bond, however, always releases energy (exothermic). If the input of energy required to break a bond exceeds the release of energy to form a bond, then the formation of that bond/molecule/compound/protein/steroid/lipid/etc is not favorable. In other words, if I have to pay a worker more than his work is worth, then his employment is not favorable. For example, the formation of an ionic bond between lithium and chloride is energetically favorable because the input of energy required to remove an electron from lithium (ionization energy) is less than the energy released (electron affinity) when chloride gains an electron.
Enthalpy is the measurement of total energy change of a reaction. The energy of bond formation and bond breaking can be used to calculate the bond enthalpy of the reaction. Bond enthalpy is the enthalphy change when 1 mol of bond is broken. Therefore the general equation to calculate the enthalpy change is energy of bond broken subtract by energy of bond formation.
The formation of ATP from ADP is an endergonic reaction, requiring input of energy. This energy is supplied through processes like cellular respiration.
endothermic reactions
Yes, it is the energy input required to remove 1 mol of electrons from 1 mol of an atom
The input energy of a blender refers to the electrical energy consumed by the blender during operation. It is measured in watts (W) and indicates the amount of power required to run the blender. The input energy can vary depending on the blender's power rating and the duration of its use.
exothermic. no energy input is required in an acid/base rxn