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
tatuchka [14]
2 years ago
8

Identify the arrows that show removal of thermal energy when matter changes state.

Chemistry
2 answers:
8090 [49]2 years ago
7 0
Let's identify first the phases of matter inside each of those beakers. The first beaker on the left has a compact shape and has its own volume. So, that must be solid. The middle beaker has a compact shape but it takes the shape of its container. So, that must be liquid. The third beaker on the right is gas because the molecules are far away from each other.

After identifying each states, let's investigate the energy for phase change. Let's start with the arrows pointing to the right. The first arrow to the right is a phase change from solid to liquid. The intermolecular forces in a solid is the strongest among the three phases of matter. So, you would need an input of energy to break them apart into liquid. The same is true for the phase change from liquid to gas. Therefore, all the arrows pointing to the right require an input of energy.

The reverse arrows pointing to the left needs to release energy. The molecules in the gas state are free such that they can travel from one point to another easily. They have the highest amount of energy. So, if you want the molecules to come closer together, you need to remove the energy to keep them in place. Therefore, the arrows pointing to the right require removal of energy.
Phantasy [73]2 years ago
4 0

Answer: the arrows pointing to the right show removal of thermal energy

Explanation: plato

You might be interested in
Which element will react with cold water? (a) sodium (b)calcium (c)zinc (d)iron (e)copper (g)mercury
rjkz [21]

The answer is a) sodium!

3 0
2 years ago
0.0400 M solution of HClO2, pH = 1.80 solve for Ka
umka2103 [35]
Ka for weak acids is ---> Ka= (X)²/ (initial- X)

initial= 0.0400 M

to find X, you can find the H concentration using pH

[H+]= 10^-pH
[H+]= 10^-1.80= 0.016 which is X

ka = (0.016)²/ (0.0400 - 0.016) = 0.011
6 0
3 years ago
What type of intermolecular force occurs between all substances? (4 points)
nirvana33 [79]

Answer:

London dispersion force.

Explanation:

London dispersion forces act between all molecules whether they are polar or non-polar.

8 0
3 years ago
D5W is shorthand for a 5% glucose rehydration fluid used in IVs. The doctor orders 1200 mL <a href="/cdn-cgi/l/email-protection"
umka2103 [35]

Gtts means "guttae", drops. Its a latin term.

The speed of D5W should be 30 gtts/min

the IV tube is of 18gtts/mL (or cc)

[cc : cubic centimeter and 1cc = 1mL]

We have to deliver 1200mL

There are 18gtts in one millilitre

or for one mL we need 18gtts

So for 1200mL we need = 18 X 1200 gtts = 21600 gtts

as the speed is 30gtts / minute

so the time taken in minute for 1gtts will be = 1 / 30 minutes

for 21600 gtts time taken in minutes = 21600 / 30 = 720 minutes

60 minutes equals one hour

so time in hours required or taken for infusion of 1200mL = 720 / 60 = 12 hours


5 0
3 years ago
Read 2 more answers
A gas has a volume of 350 mL at 318.15 K. If the volume changes to 4.00 L, what is the new temperature?
enot [183]
28°C.
Explanation:
The correct equation to use with these kinds of questions is the Combined Gas Law.
P
1
⋅
V
1
T
1
=
P
2
⋅
V
2
T
2
This equation, though, is a little unnecessary at times because of the possibility of extra constants.
In this case you have a pressure constant which enables us to shorten your longer equation down to Charles' Law because pressure remains the same and doesn't affect the calculation.
V
1
T
1
=
V
2
T
2
The next step is to isolate the variable that you want, which is, in this case,
T
2
.
T
2
=
V
1
T
1
V
2
Now it is time to replace your known variables with numbers
T
2
=
350
m
L
⋅
45
°
C
400
m
L
And calculate...
T
2
=
28.125
°
C
Significant digits...
T
2
=
28
°
C
7 0
2 years ago
Other questions:
  • A reading shows a pressure measurement of 43 in. Hg. What is the equivalent pressure in psi? A. 5.73 psi B. 2223.13 psi C. 26.32
    12·2 answers
  • What are the forces that hold sodium and chloride ions together?
    8·1 answer
  • Sabendo que A Densidade do Metal De Chumbo e 11,3/cm3
    9·1 answer
  • The Kelvin temperature of sample of 650 cm sample of ammonia gas is doubled what is the new volume of the gas
    10·1 answer
  • 1. Matter can be measured in many ways for specific purposes. Which measurement depends on the force of gravity it is not reliab
    7·1 answer
  • A certain automobile contains 4 tires, 2 headlights, 1 steering wheel,
    14·1 answer
  • A bowling ball, a baseball, a tennis ball, and a ping-pong ball are all dropped from a height of 2 meters. Which has the most ki
    14·1 answer
  • The half-life of tritium (H-3) is 12.3 years. If 48.0mg of tritium is released from a nuclear power plant during the course of a
    6·1 answer
  • Semimetals is a term which refers to
    12·1 answer
  • 12: from the following list, decide whether the following are Arrhenius bases or acids.•HCl•NaOh•HBr•H2SO4•NH4OH•H3PO4•HNO3•LiOH
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!