What Energy Is Required To Start A Reaction? The minimum amount of energy needed for a reaction to take place is called the activation energy . What is required for a chemical reaction to happen? In order for a chemical reaction to take place, the reactants must collide. The collision between the molecules in a
What Direction Does Heat Flow And Why? Heat flows from hot objects to cold objects. Heat is transferred in this direction because of a temperature difference. In other words, The hotter object will transfer heat to the colder object to balance out the heat. Which way does heat always flow? Heat energy always flows from
Why Is Otto Cycle Less Efficient Than Carnot Cycle? The Otto cycle is more complicated than a Carnot cycle, in a number of ways: … This makes the engine less efficient that a Carnot engine, because heat is being discharged at a temperature that is not as cool as the environment. What is the most
Why Do Living Organisms Not Violate The Second Law Of Thermodynamics? The second law of thermodynamics states that the entropy of a closed system will always increase with time. The only known closed system is the entire universe. … Living organisms are not a closed system, and therefore the energy input and output of an
How Does The 2nd Law Of Thermodynamics Apply To Living Organisms? Explanation: The second law says that everything goes from order to disorder, that is an increase in entropy. Living things die when the disorder in the system of the living organisms increases to the point where the system can no longer function. … This
Which Best Describes The Energy In A Closed System? What best describes the energy in a closed system at the beginning of a day and the energy at the end of the same day? … The total initial energy will be equal to the total final energy. Friction can cause the amount of thermal energy
Why Is First Law Of Thermodynamics Important? The first law of thermodynamics, arguably the most important, is an expression of the principle of conservation of energy. Consistent with this principle, the first law expresses that energy can be transformed (i.e. changed from one form to another), but cannot be created or destroyed. What is the
What Is The Law Of Increasing Entropy? The Second Law of Thermodynamics states that the state of entropy of the entire universe, as an isolated system, will always increase over time. The second law also states that the changes in the entropy in the universe can never be negative. What does the 2nd law of
Why 100 Efficiency Is Impossible? It is impossible for heat engines to achieve 100% thermal efficiency () according to the Second law of thermodynamics. This is impossible because some waste heat is always produced produced in a heat engine, shown in Figure 1 by the term. Can you ever have 100% energy efficiency? Generally, energy
What Is A Reversed Heat Engine? The reverse heat engine is a device that transfers energy from an object at a lower temperature to an object at a higher temperature by doing work on the system. … Refrigerators are reverse heat engines that pump energy out of the inside of the fridge and into the