1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
nikitadnepr [17]
3 years ago
12

Suppose a system returns to its original overall, internal energy ((∆U) after the following changes. In step 1, 25 J of work is

done on the system as it releases 37 J of energy as heat. If, in step 2, the system performs 12 J of work, how much heat is transferred?
Chemistry
1 answer:
Brums [2.3K]3 years ago
6 0

Answer:

Heat transfer in step 2 = 47.75 J

Explanation:

Internal energy = heat + work done

U = Q + W

In a cyclic process the total internal energy change of the system = 0.

In the process there are two steps. The total heat exchange in the process is the sum of heat exchanges in the two processes.

We have to find the heat exchange in step 2.

In step 1,

W = 1.25 J          Q = -37 J

U_{1} = -37 + 1.25 = -35.75 J

In step 2, the internal energy change will be negative of that in step 1.

U = 35.75 J

W = -12 J

U = Q + W

35.75 = Q -12

Q = 47.75 J

Heat transfer in step 2 = 47.75 J

You might be interested in
Why is a thermos considered a (mostly) closed system? Question 3 options: different types of liquids stay hot thermoses come in
cestrela7 [59]

Answer:

Different types of hot or cold items can be stored in a thermos and power cannot enter or exit the system when the thermos lid is tightly closed

Explanation:

Closed systems are those that do not interact or do not exchange energy with the environment that surrounds them, that is why internal temperatures and conditions are maintained.

The human body is an open system, that is, it would be the opposite of the thermos since we constantly exchange energy with the environment through sweating, emission of gases, urine, feces, and the ingestion of food.

Thermoses are systems specially created to maintain a medium, it will be maintained if its lid is hermetically closed to prevent heat leakage or entry in situations of cold fluids.

4 0
3 years ago
Does the volume change if a ballon is put in a freezer
Lorico [155]
It gets smaller so yes
6 0
3 years ago
Determine the rate of a reaction that follows the rate law:
Natali5045456 [20]
A. 0.12 (mol/L)/s

rate = 1 x 10-2 • 2^2 • 3
8 0
3 years ago
In Mitosis, do new cells have different DNA or the same DNA?
Otrada [13]

Answer: With few exceptions, the mitotic process ensures that this is the case. Therefore, mitosis ensures that each successive cellular generation has the same genetic composition as the previous generation, as well as an identical chromosome set.

5 0
3 years ago
Different between a bird and a rat​
Bess [88]

Explanation:

Rats and mice are both rodents, so look similar - the biggest difference is their size. Rats are larger and heavier while mice have smaller slender bodies. Mice also have long slender tails (for their body size) covered in hair compared to rat tails which are shorter, thicker and hairless

5 0
2 years ago
Other questions:
  • If you have 100 grams of H2, how many moles of H2 is that?
    11·2 answers
  • Which elements have electron configurations that end in ns2np5?
    9·2 answers
  • In which of the following is the number of electrons the ion contains given correctly
    13·1 answer
  • The element thallium is 70% thallium-205 and 30% thallium-203. Calculate its relative atomic mass to 1 decimal place.
    14·1 answer
  • A heliox tank contains 32% helium and 68% oxygen. The total pressure in the tank is 475 kPa. What is the partial pressure of hel
    12·1 answer
  • Ammonia (NH3) can be produced by the reaction of hydrogen gas with nitrogen gas:
    12·1 answer
  • The equation h3po4 + 3koh →k3po4 + 3h2o is an example of which type of reaction?
    7·1 answer
  • How many grams of sugar must be dissolved in 150 ML of water to make a solution that has a concern traction of .6 g/ml
    13·1 answer
  • Select all that are True.
    13·1 answer
  • Which are charateristics of all metals
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!