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Fission does not respond to changes in temperature and pressure like chemical reactions do. In a nuclear reactor, the fission chain reaction can be sped up by removing rods of cadmium, which absorb neutrons. These are in place to prevent the reaction from occurring too quickly. Remove them, and the chain reaction may proceed out of control.
What else can I help you with?
How do control rods in a nuclear reactor regulate the rate of nuclear fission?
Control rods in a nuclear reactor regulate the rate of nuclear fission by absorbing neutrons, which are needed to sustain the fission process. By adjusting the position of the control rods, operators can control the number of neutrons available to cause fission reactions, thus regulating the overall power output of the reactor.
What leads to the increase in the rate of a chemical reaction?
Many things lead to an increase in the rate of chemical reactions. These factors include: - Addition of Catalysts - Light (only in some reactions) - Increase in temperature - Increase in Pressure - Increase in amount of reactants
Does the rate constant increase with temperature in chemical reactions?
Yes, the rate constant generally increases with temperature in chemical reactions due to the higher energy of the reacting molecules, leading to more frequent and energetic collisions.
How are rate constants temperature dependent in chemical reactions?
Rate constants in chemical reactions are temperature dependent because as temperature increases, the molecules move faster and collide more frequently, leading to a higher likelihood of successful reactions. This relationship is described by the Arrhenius equation, which shows that rate constants increase exponentially with temperature.
Do chain reaction takes place in nuclear reactor?
Yes, chain reactions take place in nuclear reactors. In a nuclear reactor, the chain reaction involves the splitting of uranium atoms (fission) which releases energy and more neutrons, leading to further fission reactions. Control rods are used to regulate and maintain the chain reaction at a steady rate.
What is a device that controls the rate of nuclear fission reactions?
Control rods are used.
Do enzymes decrease the rate of chemical reactions?
No, they Increase the speed of chemical reactions
How particle collisions that affect the rate of chemical reactions?
When the number of particle collisions increase the rate of chemical reactions also increase.
If the temperature is increased the rate of most reactions will?
The rate of most will also increase.
What is the function of moderator and control rods in fission reactors?
The moderator slows down neutrons to enhance the likelihood of fission reactions. Control rods absorb neutrons to regulate the rate of the fission chain reaction in the reactor core. Together, they help maintain safe and controlled nuclear reactions in a fission reactor.
When fission is not controlled how is it used?
Reactions that involve nuclei, called nuclear reactions, result in a tremendous amount of energy. Two types are fission and fusion.
How is the rate of the fission in a nuclear reactor controlled?
The rate of fission in a nuclear reactor is controlled through the use of control rods made of materials like boron or cadmium. These control rods absorb neutrons, reducing the number available to cause fission reactions, thus regulating the rate of fission. By inserting or withdrawing these control rods into the reactor core, operators can adjust the level of fission and control the reactor's power output.
How do control rods in a nuclear reactor regulate the rate of nuclear fission?
Control rods in a nuclear reactor regulate the rate of nuclear fission by absorbing neutrons, which are needed to sustain the fission process. By adjusting the position of the control rods, operators can control the number of neutrons available to cause fission reactions, thus regulating the overall power output of the reactor.
What are enzymes and can you have a simple answer please?
Enzymes are proteins that increase the rate of chemical reactions.
How does the control rod affect the rate of reaction in the nuclear reactor?
A control rod is made of a neutron absorbing material. Boron is common. When the control rod is withdrawn (pulled out) of the reactor, the fission reaction rate increases. When that control rod is inserted, the reaction rate decreases. There are other factors that control the reaction rate, but the rods can be considered as the way to start up or shut down the reactor by pulling or inserting them.
What are molecules that are able to increase and control the rate at which life's chemical reactions occur?
Enzymes.
Are molecules that are able to increase and control the rate at which life's chemical reactions occur'?
Enzymes.
