0

🧪

# A beaker containing 400g of water has 1200 J of work done on it by stirring and 200 cal of heat added to it from a plate What is the change in the internal energy of the water in Joules?

Both the stirring and the heat energy added will increase the internal energy, so all you need to do is add both together. Don't forget to convert the calories to joules first.

# What is entropy and which phase of matter has the the highest entropy?

Entropy is a measure of the disorder or randomness in a system. The phase of matter with the highest entropy is generally considered to be the gas phase, as the particles in a gas have the highest degree of freedom and randomness compared to liquids and solids.

# What is the meaning of the Greek words from which we get the word thermodynamics?

The word "thermodynamics" is derived from the Greek words "therme" meaning heat, and "dynamis" meaning power. Together, they represent the study of the relationships between heat, energy, and work.

# In what direction does heat travel through the soup?

Heat always travels from areas of higher temperature to areas of lower temperature. the surface and sides of a container of soup are generally at a lower temperature than the interior of the soup. Of course you may still get some additional heat transfer via convection if the surface is cooler than the soup deeper in the container.

# What is plasma energy?

Plasma energy refers to the energy generated from plasma, which is the fourth state of matter after solid, liquid, and gas. Plasma is a highly charged and ionized gas that can conduct electricity and is found in phenomena such as lightning, stars, and fluorescent lights. Plasma energy has various applications including in fusion energy research, semiconductor manufacturing, and medical treatments.

# How does the boiling point of a solution depend on the amount of solute in it?

Two things affect the boiling point.

#1 the gas pressure above the solution.

The higher/lower the gas pressure above a solution will increase/decrease the boiling temperature.

#2 the amount of solute in the solvent.

There is a whole lot of chemistry on the ebullioscopic constants and cryoscopic constants.

However, a solution will boil at a higher temperature , than the corresponding solvent.

Similarly a solution will freeze at a lower temperature, than the pure solvent.

# Which allotropic form is considered the thermodynamic standard state of phosphorus?

Interestingly, white phosphorus, the most common allotrope of phosphorus, is defined as the standard state despite the fact that it is only metastable. For all the other solid elements, the "standard state" is defined as the most stable allotrope at 100 kPa.

Red, violet, and black phosphorous are more stable, but far less common since they require special conditions to be produced and even being more stable are still very reactive. Note that red phosphorous might actually be considered just an intermediate phase between white and violet phosphorous rather than an allotrope, and consequently most of its properties vary considerably.

# What materials cant heat travel through?

There is no material that completely prevents the flow of heat. However, materials that are good insulators have low thermal conductivity, meaning they slow down the transfer of heat. Some examples of good insulators include air, wool, fiberglass, and certain types of foam or plastic.

# Will an object will be a net radiator of energy when its thermal energy is less than that of its surroundings?

No, an object will not be a net radiator of energy when its thermal energy is less than that of its surroundings. In this case, the object will instead absorb thermal energy from its surroundings in an attempt to reach thermal equilibrium.

# Why do biological organisms violate the laws of thermodynamics?

Biological organisms do not violate the laws of thermodynamics. Instead, they operate within and are subject to these laws. Living systems utilize energy from their environment, taking in nutrients and converting them into useful forms of energy. While biological processes are able to maintain and increase order locally, the overall entropy of the universe continues to increase in accordance with the second law of thermodynamics.

# The thermodynamic law that explains the movement of heat energy during the refrigeration cycle is the?

second law of thermodynamics. This law states that heat naturally flows from regions of higher temperature to regions of lower temperature. In the refrigeration cycle, heat is extracted from the refrigerated space and transferred to the surrounding environment, causing the temperature inside the space to decrease.

# If work is don adiabatically on a system will the internal energy increase or decrease?

If work is done adiabatically on a system, the internal energy will increase. This is because adiabatic processes do not involve the exchange of heat with the surroundings, so any work done on the system will directly contribute to an increase in its internal energy.

# What happens to the particles of a substance when energy is added to it?

If they are in a restricted space such as a pop can. The molecules begin bouncing off the wall. This in turn is creating heat and pressure energy. If the heat or pressure become to unstable the can simply explode. This is due to the fact of the limited room the molecules or particles can go.

Now if the substance is non aqueous (without water, solid or powder) if you heat it to a certain point you could change the chemical structure of the chemical.

# What is the first law of thermodynamics known as?

The first law is also known as law of conservation of energy. It say that the energy can neither be created nor be destroyed but can only be transferred. Its is given by this equation dQ = dU + dW .

# What does the law of entropy tell?

the potential energy of the universe is decresing

# Characteristics of Bose-einstein condensate?

its compose of two (2) significant propertie: Surface tension and Viscosity (just like the liquid matter)

# What are the 3 basic laws of refrigeration?

Every liquid while evaporate takes heat from its surrounding. Any vapour suitably compressed and cooled came back into liquid form

# Has science succeeded in proving the first law of thermodynamics?

No. The second law still determines if a process will take place spontaneously. The first law does not say that if you drop a block of hot iron into a water bath that the iron can't absorb enough energy from the water to melt it while freezing the water as long as the energy absorbed by the iron matches the energy lost by the water. HOWEVER, the second law tells us this won't happen.

# How do molecules react to hot temperatures?

Molecules react depending on their chemical properties.

The negative and positive parts of atoms are attracted to each other.

For example When water molecules get close to each other, they start to "stick" together due to the partial negative charge of the oxygen atom and the partial positive charge of the hydrogen atoms.