What is the First Law of Thermodynamics? Give 1 situation wherein the first law can be applied and explain how it is applied.

Luciano Webster 2022-07-19 Answered
What is the First Law of Thermodynamics? Give 1 situation wherein the first law can be applied and explain how it is applied.
You can still ask an expert for help

Expert Community at Your Service

  • Live experts 24/7
  • Questions are typically answered in as fast as 30 minutes
  • Personalized clear answers
Learn more

Solve your problem for the price of one coffee

  • Available 24/7
  • Math expert for every subject
  • Pay only if we can solve it
Ask Question

Answers (1)

penangrl
Answered 2022-07-20 Author has 17 answers
Thermodynamics is a field of physics that deals with the thermal properties of a body to classify, study and predict its behavior. It uses statistical quantities like temperature, pressure, volume, heat capacity, among other quantities to study the body.
It includes several laws which give different incites about the system. It is a very interesting fact that the first law of thermodynamics was written before the zeroth law. Zeroth law being a more basic law was to come before first law, hence named the zeroth law.
Solution:
The first law of thermodynamics is nothing but conservation of energy. We know that energy stays conserved and is not converted from one form to another. The first law of thermodynamics says that the change in enthalpy is equal to the difference between the change in internal energy of a body and the work done by it. It can be written as follows:
d H = d U d W
Here,
Change in enthalpy corresponds to the heat exchange.
We see a lot of application of the first law of thermodynamics, but we will look at the first law.
One of the examples is the heat engine in which the heat is converted to mechanical work.
So, the heat that you give to the engine is converted to the internal energy and work done by the system.
A type of heat engine is an internal combustion engine. The heat is added through the combustion of fuel which is converted to the internal energy of the gas. The gas then expands to convert the internal energy of the gas to work.
Not exactly what you’re looking for?
Ask My Question

Expert Community at Your Service

  • Live experts 24/7
  • Questions are typically answered in as fast as 30 minutes
  • Personalized clear answers
Learn more

You might be interested in

asked 2022-05-15
Why is magnesium hydroxicide not a good choice of solute to elevate the boiling point of water?
asked 2022-04-12
What thermodynamic properties are extensive?
asked 2022-05-08
Consider a system in thermal equilibrium, having energies 0 and 'E'. Find the partition function (Z) and Entropy (S) of the system.
asked 2022-05-15
The atmospheric pressure in Ogden, Utah is 646 mm Hg. The boiling point of water here will be a. less than 100 C b. 100 C c. more than 100 C
asked 2022-05-10
Entropy change is defined as the amount of energy dispersed reversibly to or from the system at a specific temperature. Reversivility means that the temperature of the system must remain constant during the dispersal of energy to or from the system . But this criterion is only fulfilled during phase change & isothermal processes. But not all processes maintain constant temperature;temperature may change constantly during the dispersal of energy to or from the system . To measure entropy change ,say, from 300 K & 310 K, the range is divided into infinitesimal ranges ,then entropy is measured in that ranges and then is integrated . But I cannot understand how they have measured entropy change in that infinitesimal ranges as there will always be difference between the temperature however small the range might be . What is the intuition behind it? Change of entropy is measured at constant temperature,so how can it be measured in a range ? I know it is done by definite integration but can't getting the proper intuition . Also ,if by using definite integration to measure change, continuous graph must be there(like to measure change in velocity,area under the graph of acceleration is measured) . So what is the graph whose area gives change in entropy? Plz help me explaining these two questions.
asked 2022-05-14
What is the effect of pressure on the fusion and boiling point of water?
asked 2022-07-17
Suppose you mix two identical blocks of metal, one having a temperature of 10 and the other 20 . Is it possible for the cold block to cool to 5 C and the warm block to warm to 25 C?

A. Yes, because it adheres to the second law of thermodynamics.
B. No, because it will violate the zeroth law of thermodynamics.
C. Yes, because it adheres to the zeroth law of thermodynamics.
D. No, because it will violate the first law of thermodynamics.

New questions