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Free energy is the minimum energy necessary for product to form?
Free energy is the energy that is available to do work in a system. It is calculated as the difference between the enthalpy and the product of the temperature and entropy of a reaction. In a chemical reaction, the free energy change (ΔG) determines whether the reaction is spontaneous (ΔG < 0) or non-spontaneous (ΔG > 0).
Why Gibbs free energy must decrease in a spontaneous reaction?
Gibbs free energy (G) represents the maximum reversible work that can be performed by a system at constant temperature and pressure. In a spontaneous reaction, the system tends to move towards a state of lower energy and increased entropy, which corresponds to a decrease in Gibbs free energy. A negative change in Gibbs free energy (ΔG < 0) indicates that the reaction can occur spontaneously, driving the system towards equilibrium. Therefore, for a reaction to be spontaneous, Gibbs free energy must decrease.
How much refrigerant vapor is left in an average 350 ton r11 chiller at 0 Psi once all the r11 liquid is removed?
In a 350-ton R-11 chiller, if all the liquid refrigerant is removed, the amount of vapor left at 0 psi would typically be minimal. The refrigerant vapor remaining would depend on the specific design and operating conditions of the chiller, but generally, the vapor pressure of R-11 at 0 psi is very low, indicating that only a small quantity of vapor would remain. Additionally, it's important to ensure that the system is properly evacuated to minimize any residual refrigerant.
When does freezing occur in the water cycle?
Water doesn't spontaneously freeze (thank goodness). It freezes because heat is being removed from it (by a fridge, for instance). As heat is gradually removed the molecules of water vibrate less and less as they lose energy. Eventually the random vibration almost stops and the molecules form into a fixed array like an army on parade. This lattice structure is so much stronger than individual water molecules flying about hither and thither and is called ice.
What is the best description of the global grid?
The global grid refers to the interconnected network of power lines and infrastructure that distribute electricity across regions and countries worldwide. It enables the exchange of electricity between different areas, supporting reliability and flexibility in the supply of energy.
How much energy is needed to freeze 1 Gramme of water at 10 Celsius to 0 Kelvin or Absolute Zero?
First of all, energy needs to be removed from the system to cool it towards Absolute Zero. Second, reaching Absolute Zero is not possible.
What is the temperature at which no more energy can be removed from matter?
Absolute zero. On the Kelvin scale of heat measurement, 0K is the point at which no more energy can be removed or −273.15°C / −459.67°F. There is not enough energy there at 0K to transfer any movement from the substance to another substance.
The temperature at which no more energy can be removed from a substance?
The temperature at which no more energy can be removed from a substance is known as absolute zero. This is the lowest possible temperature that can be reached, at which the particles of the substance have minimal thermal motion. It is defined as 0 Kelvin or -273.15 degrees Celsius.
What is the temperature called at which no energy can be removed from matter?
Absolute zero is the temperature at which no energy can be removed from matter. At this temperature, particles have minimal motion and all thermal energy is lost. It is equivalent to -273.15 degrees Celsius or 0 Kelvin.
What is the temperature called at which no more energy can be removed from matter?
-273.15 degrees Celsius (-459.67 degrees Fahrenheit) is the temperature at which no more energy can be removed from matter.It is called Absolute Zero and marks the 0 for the Kelvin and Rankine scale.
What is the maximum cold things can be?
The maximum cold temperature that things can reach is absolute zero, which is 0 Kelvin or -273.15 degrees Celsius. At this temperature, particles stop moving, and all thermal energy is removed from the system.
What would happen to liquid water if energy is removed?
If energy is removed from liquid water, it would cool down and eventually freeze into solid ice at its freezing point (0 degrees Celsius or 32 degrees Fahrenheit).
What is the temperature called at no more energy can be removed from matter?
-273.15 degrees Celsius (-459.67 degrees Fahrenheit) is the temperature at which no more energy can be removed from matter.It is called Absolute Zero and marks the 0 for the Kelvin and Rankine scale.
What does the temperature scale on which zero is the temperature at which no more energy can be removed from matter mean?
The Kelvin scale with 0 at absolute zero means that you cannot get negative Kelvins. As you cool matter closer and closer to 0K the atoms in matter move less and less. they cannot move less than not at all.
Would thermal energy be greater at 0 celsius or 48 Fahrenheit?
Thermal energy is greater at 48 Fahrenheit because it represents a higher temperature than 0 Celsius. Thermal energy is a measure of the internal energy of a system, which increases with temperature.
What is the value of Δ E if Final equals Initial?
If the final energy equals the initial energy, then the change in energy (ΔE) is zero. This means that there has been no net change in the system's energy. Mathematically, ΔE = Final - Initial = 0. Therefore, ΔE = 0 in this scenario.
How much energy must be removed from a 200 G block of ice to cool it from 0 degrees to -30 degrees?
To calculate the energy required, you can use the specific heat capacity of ice, which is 2.09 J/g°C. First, calculate the energy needed to cool the ice from 0°C to its freezing point at -30°C. The temperature change is 30°C. Therefore, the energy required = 200 g * 30°C * 2.09 J/g°C.
