Entropy

Researches related to SW/MWCNTs that shown great adsorption behavior toward heavy metallic ions possess negative Gibb’s free energy change, positive enthalpy change and positive entropy change which is the same result as studies for activated carbons[19][20][24]. The negative value of ∆G reflects feasibility and spontaneity of adsorption processes. The more negativity of ∆G marks greater driving force for adsorption, which implies…

= ∆H –T∆S ∆H refers to the enthalpy and is a measure of the actual energy that is released when the reaction occurs. A negative value of ∆H means the reaction is exothermic while a positive ∆H is for an endothermic reaction. ∆S refers to the entropy and it is a measure of the degree of disorder in the product compared to reactants. When a solid with an ordered state reacts with…

Introduction Thermodynamics is the study of heat and chemical transformations as a result of energy changes, energy is what keeps things moving in our everyday life and is applied to nearly everything to a point where knowledge of thermodynamics is common sense weather we know it or not. Now a days every household, car, office and even laptops and electronics have air conditioning which has allowed for appealing aspects of commercial use and consumer consumption, but what we don 't consider is…

Thermoelasticity describes the interaction of the mechanical fields such as stress, strain and displacement with temperature field and investigates the interaction on the basis of the thermodynamics of the irreversible processes. It relates two separate and independently developed sciences: the theory of elasticity and the theory of heat conduction. The two basic branches of elasticity, namely elastostatic and elastodynamics are developed under different thermodynamic assumptions. The problems…

Energy production Jigsaw Project individual Selena Xu 1. Second law of thermodynamics: ❖ What is the second law of thermodynamics? Well, this law talks about the quality of energy, while the quantity of energy and matter stays constant. This law tells us that heat will flow from a hotter object to a colder object, due to Newton’s second law and that when energy is transferring and transforming, some of the useful energy might be lost . ❖ Cyclic process of energy transfer is a when a series…

Where did we come from? Even children become struck with the question about the origin of life. As tough as it may be to tell a young child how babies appear, it does not compare to the complexity of explaining how the entire universe began. Every human encompasses a natural desire to discover the truth, but it persists as one of the most controversial subjects. Some philosophical minds, Evolutionists or Darwinists, believe all substance started with a “Big Bang” and then began to evolve into…

Energy Thermodynamics is, the everything that happens due to the flowing of the heat from a hot locale to a cold locale, and nothing occurs without the flow of the heat. Additionally, thermodynamics is an exact science. Thermodynamic system is defined by volume, pressure, temperature and chemical make-up. When conditions change the thermodynamic system will respond by changing its temperature, volume, pressure, or chemical make-up and will adjust accordingly in order to reach its original…

Absolute zero is the lowest possible temperature, where nothing could be colder and no heat energy remains in a substance. The absolute zero value of an experiment is the temperature at which entropy reaches its minimum value. The theoretical values for absolute zero is 0 Kelvin (-273.15 ◦C or -459.67 ◦F). This principle applies to the experiment as it explains the value at which a gas would theoretically have a volume of 0 mL and would therefore…

created nor destroyed. It can only change forms. In any process, the total energy of the universe remains the same. For a thermodynamic cycle the net heat supplied to the system equals the net work done by the system.Second law of thermodynamics – The entropy of an isolated system not in equilibrium will tend to increase over time, approaching a maximum value at equilibrium.Third law of thermodynamics – As temperature…

Personal Energy and Material of Toothpaste The cycle of energy that gets put into the simple product of a tube of toothpaste is a rather lengthy one. Most people simply think of the raw materials that are put into the toothpaste, but what about the tube itself? Most people just consider the resources that are put into the paste, but what about the energy used to transport those resources or to mix them together. Perhaps one has considered the tube and the energy that was put into making it, but…