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It gets transformed into other types of energy, never destroyed nor created.
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∙ 12y ago
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What happens to the radioactive isotopes that are released in a nuclear reaction?
they decay over time
What is the term for energy that is available to do work in a reaction?
Yes, of course... Work is power which is energy absorption or use over time. No energy, no work regardless of how much time is allowed.
What happens to water in light dependent reaction?
the water dries up and emoes all over the world sit and cry
Is activation energy for thermal and photochemical reactions same?
The definition of the activation energy is exactly the same -- the thermodynamic energy barrier that the reactant must pass over to convert to products. The difference between a thermal and a photochemical reaction is only where the reactants get the energy to get over this barrier. In a thermal reaction, that energy is given by the temperature, and is carried in excited rotational modes, higher kinetic energies and if hot enough, excited vibrational states. In a photochemical reaction, the activation energy is provided by photons, usually in the form of electronic excited states, but could also be vibrational or rotational. The concept of the activation barrier is identical in both cases.
Effects of temperature and pressure on exothermic and endothermic reaction?
An increase in temperature favours an endothermic reaction over an exothermic one as an endothermic reaction takes in the energy from the higher temperature more easily than the exothermic reaction gives out even more energy to the surroundings. Therefore an increase in temperature increases the level of completion and viability of an endothermic reaction, and the opposite for an exothermic reaction. An increase in pressure favours any reaction that forms fewer molecules from more molecules. It does not necessarily favour an exothermic or an endothermic reaction as it depends on the number of molecules on either side of the reaction. An endothermic reaction involves the breaking of bonds to a greater extent than an exothermic reaction, so an increase in pressure would, in a lot of cases, favour the exothermic reaction more than the endothermic reaction.
What happens to copper's chemical property when it is exposed to air?
Copper, over the course of time, is gradually oxidized when exposed to air. It takes quite awhile for this reaction to occur naturally; however, the reaction is expedited with heat. The result is Copper oxide.
The reason for using powered calcium carbonate CaCO3 and heating the reaction mixtures up are?
Powdered: increases surface area the reaction happens over, thereby increasing the rate of reaction Heat: Provides energy for the reaction. Particles move faster, therefore collide more frequently. also, more particles have sufficient energy to react when they collide. This also increases rate.
What happens to the radioactive isotopes that are released in a nuclear reaction?
they decay over time
What happens to the moon over a course of a few weeks?
Well, I believe that over the course of a few weeks our Moon just changes phases, besides that I don't think anything else happens to it...
Activation energy barriers?
The activation energy is the amount of energy needed to start a reaction. If the reactants have less than that amount the reaction will not occur. In this way it acts as a barrier that prevents a reaction unless there is enough energy to break it.
What do enzymes do that is so great?
Enzymes lower the activation energy of a reaction, acting as a catalyst and speed up the reaction. Plus they never get used up, only over and over again.
What changes in the hot pack over the course of the demonstration?
Amount of thermal energy
Energy is neither created nor destroyed in a chemical reaction Explain where the energy released or absorbed by the reactions comes from or goes to?
Energy released by a chemical reaction is released as heat to the surroundings thus rising the temperature of the room or lab etc where the reaction is taking place. Similarly, energy absorbed by endothermic is either supplied by external heating of reaction mixture over a flame or absorbed from surroundings.
Does an enzyme lower the activation energy of a reaction?
ENZYMES WILL LOWER THE ACTIVATION ENERGY.ACTIVATION ENERGY IS THE INITIAL "PUSH" TO START A REACTION.ENZYME WILL SPEED UP THE PROCESS OF STARTING THE REACTION..THINK OF SOMEONE TRYING TO CLIMB OVER A WALL.THE WALL IS THE ACTIVATION ENERGY..ENZYME IS THE BULL DOZER THAT CRUMBLES THE WALL DOWN.THUS,YOU CAN QUICKLY GET OVER THE WALL.
Which analogy can best be likened to the activation energy of a chemical reaction?
a hill over which the wagon is pushed. - novanet
What happens if you fail geometry regents in summer school but take the course over?
nothin
What is the term for energy that is available to do work in a reaction?
Yes, of course... Work is power which is energy absorption or use over time. No energy, no work regardless of how much time is allowed.
