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
RSB [31]
3 years ago
6

In the first law of thermodynamics, △E = Q-w, what does △E stand for?

Chemistry
2 answers:
Ilia_Sergeevich [38]3 years ago
8 0

Answer:

hello! the awnser is c.the heat added to the system

Explanation:

i took the test and got it right ;)

Damm [24]3 years ago
6 0

<u>Answer: </u>The correct answer is Option B.

<u>Explanation:</u>

First law of thermodynamics states that the energy can neither be destroyed not be formed but it can only be transformed from one form to another.

Here, the internal energy of the system is being transformed to the heat energy and the work done by the system. The equation used to represent first law of thermodynamic is:

\Delta E=Q-w

where,

\Delta E represents the internal energy of the system.

Q = heat released or absorbed by the system.

w = work done by or on the system.

Hence, the correct answer is Option B.

You might be interested in
A 6.0 Liter solution is made with 2 moles of solute. What is the molarity of the solution?
kodGreya [7K]
The formula for molarity is: mol/L. so it would be 2.0 mol/ 6.0 L.

the answer is: .33 M

hope this helps!
3 0
3 years ago
Which will dissolve at the fastest rate?
Nezavi [6.7K]
I need help on this one too I think it might be (b)
7 0
3 years ago
What is the answer to 4x - 16
andrezito [222]
It simply equals 4x-16.......
the expression is in lowest terms, so you can’t do anything else
4 0
3 years ago
Read 2 more answers
10. Which one of the following statements about sulfuric acid is correct? A. Sulfuric acid has little effect on metals.
Orlov [11]
C. Sulfuric acid is a strong oxidizing agent.
7 0
3 years ago
A chemist has one solu6on that is 40% sulfuric acid and one that is 10% sulfuric acid. How much of each should she use to make 2
kipiarov [429]

Answer:

12 L of 40% sulfuric acid solution and 8 L of 10% sulfuric acid solution are needed to make 20 L of sulfuric acid solution.

Explanation:

For first solution of sulfuric acid :

C₁ = 40% , V₁ = ?

For second solution of sulfuric acid :

C₂ = 10% , V₂ = ?

For the resultant solution of sulfuric acid:

C₃ = 28% , V₃ = 20L

Also,

<u>V₁ + V₂ = V₃ = 20L</u> ......................................(1)

Using

<u>C₁V₁ + C₂V₂ = C₃V₃</u>

<u>40×V₁ + 10×V₂ = 28×20</u>

So,

40V₁ + 10V₂ = 560........................................(2)

Solving 1 and 2 as:

V₂ = 20 - V₁

Applying in 2

40V₁ + 10(20 - V₁)  = 560

40V₁ + 200 - 10V₁ = 560

30V₁ = 360

<u>V₁ = 12 L</u>

So,

<u>V₂ = 20 - V₁ = 8L</u>

<u><em>12 L of 40% sulfuric acid solution and 8 L of 10% sulfuric acid solution are needed to make 20 L of sulfuric acid solution.</em></u>

4 0
3 years ago
Other questions:
  • How may a substance be tested to determine whether or not it is an element
    5·1 answer
  • Why and how are acids and bases important?
    6·1 answer
  • Which type of energy is represented here? A. Thermal B. Chemical potential C. Mechanical D. Electromagnetic
    9·2 answers
  • What's the molar mass of Calcium Chloride?
    12·1 answer
  • How do seismologists measure earthquakes?
    15·1 answer
  • What conversion factors<br> determine the number of<br> molecules from the mass of a<br> compound?
    13·1 answer
  • As the amount of charge on two objects increases, the strength of the electrical force between the objects
    10·2 answers
  • Please help due in 5 min.
    8·1 answer
  • The passage below describes an experiment. Read the passage and then follow the instructions below.
    6·1 answer
  • Show all calulations
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!