842 J of works was done for a gas to be compressed. At the same time, it releases 451 J of heat. What is the change in the energy of the system?

Melina Barber 2022-09-25 Answered
842 J of works was done for a gas to be compressed. At the same time, it releases 451 J of heat. What is the change in the energy of the system?
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)

Claire Larson
Answered 2022-09-26 Author has 10 answers
Given ->
Work = +842 J ( work done on the system)
Q = -451 J ( heat released)
According to first law of thermodynamics->
E = Q + W E = 451 + 842 E = + 391   J
Change in energy = 391 J
Did you like this example?
Subscribe for all access

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 2022-11-06
In a constant pressure process, the change in internal energy is
U = 3 2 n R T = 3 2 P ( V 2 V 1 ) .
However in a constant volume, is the change in internal energy U = 3 2 n R T = V ( P 2 P 1 ) ?
asked 2022-10-31
Which law of thermodynamics best explains respiration?
asked 2022-08-16
If you have a fluid with with pressure field p what is the physical significance of the the volume integral of the pressure V p d V ?
asked 2022-08-14
After you drive for a while your tires will gain some energy via friction and heat up. If the air inside the tires absorbs 150 Joules of energy by heat, and does 100 Joules of work by expanding and lifting your car a fraction of a millimeter, what is the net change in the internal energy of the air inside the tires? (Hint: Use the first law of thermodynamics) 100 Joules 50 Joules 250 Joules 150 Joules
asked 2022-10-23
The internal energy of the gas in a system increased by 114 J during a process in which 21 J of the energy is transferred from the system as heat. What is the work done as the gas in compressed? Show procedure and the final result.
asked 2022-09-17
What would be the proper way to express the heat capacity
C V = ( d U d T ) V
in terms of ω Q ?
asked 2022-08-15
Show that the work performed by an engine during an irreversible cycle operating between two thermal reservoirs at temperatures T 1 and T 2 < T 1 is given by W = W m a x T 2 Δ S, where Δ S is the increase of entropy of the Universe, and W m a x is the corresponding work performed in a reversible Carnot cycle.