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Why is lots of energy required to separate lithium and oxygen in lithiumoxide?
Separating lithium and oxygen in lithium oxide requires a lot of energy because it involves breaking strong chemical bonds between lithium and oxygen atoms. It takes significant energy to overcome the attractive forces holding these atoms together in a stable compound like lithium oxide.
What is energy is a minimum amount of energy required for substances to react?
Activation energy is the minimum amount of energy required for substances to react. It is necessary to break the existing bonds in the reactants before new bonds can form in the products.
The minimum energy required to break the oxygen oxygen bond is 495 kJmol The wavelength of sunlight that can cause this bond breakage is 241nm How do you obtain this wavelength?
To find the wavelength, first convert the energy required to break the bond from kJ/mol to J/molecule. Then use this energy value to calculate the frequency of the light required using the formula E=hf, where E is the energy, h is Planck's constant, and f is the frequency. Finally, use the relationship between frequency and wavelength (c = λf) to find the wavelength, where c is the speed of light.
What can you say about the relative magnitudes of the lattice energy of lithium iodide and its heat of hydration?
The lattice energy of lithium iodide is typically larger than its heat of hydration. This means that more energy is required to break the ionic bonds in the solid lattice of lithium iodide than is released when the ions are hydrated in solution.
What is a sentence using the word activation energy?
Activation Energy is the required energy needed in order for a chemical reaction to start.
How does threshold frequency relate to work function?
Threshold frequency is the minimum frequency of light required to eject an electron from a metal surface, while work function is the minimum energy required to remove an electron from the metal. The threshold frequency is directly related to the work function by the equation E = hf, where E is the energy required, h is Planck's constant, and f is the frequency of the incident light.
Why there is a cutoff requency in the photoelectric effect?
In any circumstance where a threshold of energy is required to free an electron from a bound state, an incoming photon must have at least that energy to do the job. The energy of a photon is proportional to the frequency of the light, so the minimum energy corresponds to a minimum frequency of the light, or maximum wavelength necessary to free an electron. This observation was a major step in the development of radiation theory (Einstein).
Does activation energy depend on collision frequency?
No, activation energy is a fixed value for a specific reaction and does not depend on collision frequency. Activation energy is the minimum amount of energy required for a reaction to occur, while collision frequency relates to the number of collisions that occur in a given time period.
How is the threshold frequency related to work function?
The threshold frequency is the minimum frequency of light required to eject electrons from a metal surface (photoelectric effect). The work function is the minimum energy needed to remove an electron from the metal surface. The threshold frequency is directly related to the work function through the equation E = hf, where E is the energy, h is Planck's constant, and f is the frequency.
Minimum frequency generated by radioactive nuclei?
The minimum frequency of radiation emitted by a radioactive nucleus is proportional to its energy. This frequency is related to the energy by the equation E = hf, where E is the energy, h is Planck's constant, and f is the frequency. Therefore, the minimum frequency of radiation emitted by a radioactive nucleus depends on the specific energy released during the radioactive decay process.
What is the difference between work function and threshold frequency?
Oh, dude, work function and threshold frequency are like distant cousins at a family reunion. Work function is the minimum energy needed to eject an electron from a metal surface, while threshold frequency is the minimum frequency of light required to cause photoelectric emission. So, like, work function is about energy, and threshold frequency is about frequency. They're related, but not like, best friends or anything.
What is threshold frequency in photoelectric effect?
Threshold frequency refers to the minimum frequency of incident light required to eject electrons from the surface of a metal in the photoelectric effect. Electrons will only be emitted if the frequency of light is equal to or greater than the threshold frequency, as lower frequencies do not possess sufficient energy to overcome the work function of the metal.
What is threshold frequency?
Threshold frequency is the minimum frequency of light required to eject electrons from a metal surface in the photoelectric effect. Below this frequency, no electrons are emitted regardless of intensity. It is a characteristic property of each metal and is used to determine the work function of the metal.
Activation energy is the minimum energy required to do what?
For the substance(s) to react
Why is lots of energy required to separate lithium and oxygen in lithiumoxide?
Separating lithium and oxygen in lithium oxide requires a lot of energy because it involves breaking strong chemical bonds between lithium and oxygen atoms. It takes significant energy to overcome the attractive forces holding these atoms together in a stable compound like lithium oxide.
What is energy is a minimum amount of energy required for substances to react?
Activation energy is the minimum amount of energy required for substances to react. It is necessary to break the existing bonds in the reactants before new bonds can form in the products.
What is the minimum amount of energy needed to start a chemical reaction is called?
The energy required is called the activation energy. The minimum amount of energy needed to start a chemical reaction is given by the formula Ea=-RT*ln(k/A). R is the universal gas constant, T is temperature in Kelvin, k is the reaction rate coefficient and A is the frequency factor.
