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An endothermic reaction would not necessarily have either a high or low activation energy; it could be either and would depend on the reactants. Also, the activation energy alone does not determine if a reaction is endothermic or exothermic; a low or high activation energy could be part of an endothermic or exothermic reaction, again depending on the reactants.
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Do photon have a greater energy than electron?
No. A photon has no rest mass an electron has mass.
Does a high-efficiency machine degrade a relatively high or low percentage of energy to thermal energy?
A high-efficiency machine degrades a relatively low percentage of energy to thermal energy. This means that a larger percentage of the energy input is converted into useful work or output, resulting in less wasted energy in the form of heat.
What is difference between low grade energy high grade energy?
Low-grade energy: Based on the thermodynamic concepts, an energy source can be called as high-grade or low-grade, depending the ease with which it can be converted into other forms. Thus electrical energy is called a high-grade energy, as it is very easy to convert almost all of it into other energy forms such as thermal energy (say by using an electrical heater). Whereas, it is not possible to convert thermal energy completely into electrical energy (typical efficiencies of thermal power plants are around 30 percent), hence thermal energy is called a low-grade energy. Naturally, high-grade energy sources are more expensive compared to low-grade energy sources.
How many directions does energy flow?
Energy can flow in any direction based on the system in question. It can move from high energy to low energy areas, between different forms (such as from heat to mechanical energy), or be stored for later use.
How does energy transfer?
hot to cold, fast to slow, high to low.
Does endothermic have high or low activation energy?
An endothermic reaction would not necessarily have either a high or low activation energy; it could be either and would depend on the reactants. Also, the activation energy alone does not determine if a reaction is endothermic or exothermic; a low or high activation energy could be part of an endothermic or exothermic reaction, again depending on the reactants.
You may normally expect a slow reaction if a low activation energy is required?
Yes, reactions with low activation energies typically proceed at a slower pace because only a small amount of energy is needed to initiate the reaction. This means that fewer collisions between reactant particles will have enough energy to overcome the activation energy barrier, resulting in a slower overall reaction rate.
Are endothermic reaction products stable?
It depends on a few things. If you mean thermodynamically stable, then no. The product of an endothermic reaction is higher in potential energy than the reactant(s) and will eventually release that energy and revert back (if it doesn't go on to some other product). If you mean kinetically stable, then maybe. It really depends on the relative energy of any intermediates formed in the conversion of reactant(s) to product(s). This relative energy is also known as activation energy. If the activation energy is high, then the product would be relatively stable. If the activation energy is low, then the product would not be stable.
Energy of activation is?
The energy need to activate something depends on what is being activated. These energies can range from high to low.
The activation energy for the chemical reaction in living thing is high or low?
It is high because the enzymes in cells speed up the reactions by lowering the energy.
Is the activation energy for chemical reactions in living things high or low?
Activation energy of reaction is the same regardless if it is in living organism or in test tube. Yet, the energy of activation can be lowered if catalyst is present. In living things catalyst lower the energy needed for chemical reactions.
Energy required to start chemical reaction?
The energy required to start a chemical reaction is known as activation energy. This energy is needed to break the bonds in the reactant molecules before new bonds can form in the products. Activation energy acts as a barrier that must be overcome for the reaction to proceed.
How does activation energy determine if a reaction will release or absorb energy?
Activation energy is really just the minimum amount of energy needed for a chemical reaction to occur. Without it, the energy will stay the same and the substance cannot undergo a chemical change. The thing to look at, I think, is the product of the reaction. For example, in a graph, two substances could have the same activation energy, but after the reaction the amount of energy in substance 1 could be extremely low and the amount of energy in substance 2 could be higher than the activation energy. In substance 1, evidence of an EXOTHERMIC reaction has occurred because the amount of energy in the original substance was lost indicating that it has released energy. Whereas in substance 2, when the amount of energy was higher than the activation energy, it is evident that an ENDOTHERMIC reaction has occurred because the amount of energy after the reaction is higher than it was before the reaction. This shows that substance 2 absorbedenergy making it endothermic. hope this helps!
How do you use the word endothermic in a sentence?
Most endothermic reactions will stop once the temperature becomes too low. Stars cannot make energy from fusing iron into nickel since it is an endothermic process.
What is the difference between high quality and low quality energy?
The main difference between high quality and low quality energy is in the perception. This will facilitate the proper grading of tasks with the high tasks using high energy and low tasks low energy.
Does Rb have a high ionization energy or low ionization energy?
Low
Does Kr have high ionization energy or low ionization energy?
high
