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
gtnhenbr [62]
3 years ago
6

Assuming constant pressure, rank these reactions from most energy released by the system to most energy absorbed by the system,

based on the following descriptions:__________.
A: Surroundings get colder and the system decreases in volume.
B: Surroundings get hotter and the system expands in volume.
C: Surroundings get hotter and the system decreases in volume.
D: Surroundings get hotter and the system does not change in volume.
Chemistry
1 answer:
defon3 years ago
5 0

Answer:

C: The surroundings heat up and the system decreases in volume.

D: The surroundings heat up and the system does not change volume.

B: The surroundings heat up and the system expands in volume.

A: The surroundings get cold and the system decreases in volume.

Explanation:

The most exothermic reactions are those that release heat, that is to say, they give up the heat as it cools and the surroundings heat up.

As for endothermics, that is, those that absorb or capture the heat of the medium, they are variables that cool the environment that surrounds them and increase their internal temperature

You might be interested in
This scientist is best known for his three laws of motion and his work on gravity. He discovered that white light was made up of
fredd [130]

Answer:

Sir Isaac Newton

Explanation:

8 0
3 years ago
Read 2 more answers
Under standard condition and 298 K, the free energy difference, ∆Gº between the two chair conformations of a substituted cyclohe
Ksenya-84 [330]
Delta Go = -RTlnKeq

delta Go = 5.95 kJ/mole = 5.95 X 1000 = 5950 J/mole ( 1 kj = 1000 J )

putting the values and finding Keq

5950 = -8.314 X 298 X ln Keq

ln Keq = -5950 / 2477.572 = -2.4015

Keq = e^-2.402 = 0.0905

suppose the equilibrium reaction is :-

chair 1 <--------> chair 2

now as Keq is less than 1 ....so chair 1 will be more stable

Keq = [chair2]/[chair 1 ] = 0.0905

this means that [chair 2] ~ 0.0905 and [chair 1] ~ 1

[total] = [chair 2] + [chair 1] ~ 1 + 0.0905= 1.0905

percentage of chair 1 = [chair 1] / [total] = 1 / 1.0905 X 100 = 91.70 %
6 0
3 years ago
What is the density (in g/L) of a gas with
viva [34]

Answer:

2.22 g/L

Explanation:

There's a relationship using the ideal gas law between molar mass and density: MM=\frac{dRT}{P}, where MM is the molar mass, d is the density, R is the gas constant, T is the temperature, and P is the pressure.

We know from the problem that MM = 32.49 g/mol, T = 458 Kelvin, and P = 2.569 atm. The gas constant, R, in terms of the units atm and Kelvin is 0.08206. Let's substitute these values into the formula:

MM=\frac{dRT}{P}

32.49g/mol=\frac{d*0.08206*458K}{2.569atm}

Solve for d:

d * 0.08206 * 458 K = 32.49 * 2.569

d = (32.49 * 2.569) / (0.08206 * 458 K) ≈ 2.22 g/L

The answer is thus 2.22 g/L.

<em>~ an aesthetics lover</em>

4 0
4 years ago
The solar energy received at each area of earth is not the same this is the driving force for the earth ___
Orlov [11]
I think its tilt but I'm not sure
3 0
4 years ago
Read 2 more answers
What is the definition of the following word<br><br><br>sublimitation<br><br>​
DiKsa [7]
the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.
6 0
3 years ago
Other questions:
  • national defense, currency, post office, foreign affairs, &amp; interstate commerce. b. charter local governments, education, pu
    14·1 answer
  • A sample of 1.44 g of helium and an unweighed quantity of O₂ are mixed in a flask at room temperature. The partial pressure of h
    6·1 answer
  • Which value is most likely to be the pH of a salt that is formed by the reaction of a weak acid and a strong base?
    9·2 answers
  • What is the difference between a renewable and non-renewable source of energy? Give 3 examples of each.
    10·1 answer
  • You have 1684.6 g of a bleach solution. The percent by mass of the solute sodium hypochlorite, NaOCl, is 3.62%. How many grams o
    14·1 answer
  • Which of the following methods would best model how the mountains formed?
    14·1 answer
  • When N,N-Dimethylaniline is treated with bromine, ortho and para products are observed. However, when N,N-Dimethylaniline is tre
    9·1 answer
  • A tennis ball is thrown straight up with an initial speed of 20 m/s.  How long does it take to reach the top of the flight?
    5·1 answer
  • Indicate the charge carried by the following atomic particles:
    8·2 answers
  • Structures of compounds people use every day are shown. From which group of unsaturated hydrocarbons is each derived? 2 carbons
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!