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
lozanna [386]
3 years ago
13

At standard pressure, during which physical change does the potential energy decrease?

Chemistry
2 answers:
Kryger [21]3 years ago
8 0

Answer is: cooling.

Cooling is change from liquids to solids.

Another example is crystalisation, many elements and compounds form crystals.

A physical change occurs when a substance changes phase.

Physical property can be observed and measured without any changes in molecular composition. The same substance is present before and after the change.

sashaice [31]3 years ago
4 0
The potential energy of a material is its ability to do work. So I would suspect the potential energy to increase during phase changes that increase entropy (solid <span>→→</span><span> liquid and liquid </span><span>→→</span><span> gas), and decrease in the opposite direction.</span>
You might be interested in
2. What are the different areas of an electron cloud called?
Ghella [55]
Shells (electrons) - located in the cloud
nucleus- located in the center
energy level - is determined by the electron count ( level 1 - 2 electrons
level 2 - 8 electrons
level 3- 18 electrons)

5 0
4 years ago
URGENT! Consider the following decomposition reaction of ammonium carbonate ((NH4)2CO3):
dexar [7]
<span>Using PV=nRT to find the moles and then convert back.
</span><span>4x=.8944
</span><span>solve for x then use the pressure for lets say CO2 put that into PV=nRT then solve for n then convert over.
</span>
<span>(.2236)(2)/(298*.08206) = .0183*96g/mol = 1.76g
</span>
<span>For C:

[NH3]^2[CO2][H2O] = Kp
x=0.2236 (2*.2236)^2(.2236)*(.2236)
  =0.001
</span>
6 0
3 years ago
Help?
ss7ja [257]

Newton's F=ma, which means the force (F) acting on an object is equal to the mass (m) of an object times its acceleration (a)

Explanation:

F = ma, or force is equal to mass times acceleration.

4 0
3 years ago
If 71.5 moles of an ideal gas is at 5.03 atm at 6.80 °C, what is the volume of the gas?
meriva
Use the clapeyron equation:

T in kelvin : 6.80 + 273 => 279.8 K

R = 0.082 

n = 71.5 moles

P = 5.03 atm

Therefore:

P x V = n x R x T

5.03 x V = 71.5 x 0.082 x 279.8

5.03 x V = 1640.4674

V = 1640.4674 / 5.03

V = 326.13 L

hope ths helps!
5 0
3 years ago
What are examples of smaller bodies ​
Inga [223]

comets, astroids oort clouds which surround the kuiper belt

8 0
3 years ago
Other questions:
  • Given the results of your coarse titration, how does the concentration of the acetic acid compare to the concentration of sodium
    10·1 answer
  • 1. How is the density of a substance calculated? 2. If the shape of an object is irregular, like a stone, how can you measure it
    11·1 answer
  • If you were to pour 4 different liquids into a glass and the liquids separated into 4 layers, which liquid would have the highes
    5·1 answer
  • Is it possible for a child to have a dna band that is not found in the mother's dna? Explain
    15·2 answers
  • What mass in grams of nitric acid is required to react with 750 g C7H8?
    11·1 answer
  • Write the empirical formula
    13·1 answer
  • A small helium tank measures about two feet high. Yet it can fill over 50 balloons! How can such a small tank contain enough hel
    9·1 answer
  • How many moles are there in 1.68 * 10 ^ 24 molecules of nitrogen dioxide?
    9·1 answer
  • Zinc metal can be obtained from Zinc Oxide by reaction at high temperature with CO. The CO is obtained from burning C in limited
    5·1 answer
  • How many atoms are in 200.0 grams of Sulfur (S)?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!