which change of phase is exothermic

Answers

Answer 1
Changes of state are examples of phase changes, or phase transitions.

Fusion, vaporization, and sublimation are endothermic processes, whereas freezing,condensation, and deposition are exothermic processes.

Related Questions

why brain remembers picture better than words?​

Answers

Answer:

your brain processes ever detail in a picture rather than words for for example a picture of something words doesn't describe it as well as the picture could.

humans respond and process images way better then text. 60,000 times faster. our brains are just wired that way and pictures are coded more easily and can be retrieved symbolic mode , while the dual coding process using is more difficult for both ways retrieval and processing

Which of the following statements about subatomic particles is BEST supported by information in the article?

A. The motion of large objects is just as unpredictable as that of subatomic particles.

B. Subatomic particles don’t follow the same laws of physics as large objects.

C. The force of gravity acts more strongly on subatomic particles than on large objects.

D. It is easier to measure the movement of subatomic particles than the movement of large objects.

Answers

The characteristics of the subatomic particles allow to find which is the correct answer:

B)  Subatomic particles don’t follow the same laws of physics as large objects.

Subatomic particles are the contributors to atoms, the main three being electrons, protons, and neutrons. The movement of these particles is described by the Schrodinger equation, the result of which is wave function.

To obtain the physical function of the wave mergers, the probability function must be constructed.

                        P = Ф* Ф

therefore the movement of the subatomic particulars is probabilistic at all times, when a large number of them join the mean value of this probability closer to the macroscopic movement.

Let's examine the claims.

A) False. The macroscopic motion of objects is the mean value of the microscopic motion, which with increasing size is deterministic and predictable.

B) True. Subatomic particles follow the rules of the Schrodinger equation and macroscopically Newton's second law.   Inconsequently they use different laws or to describe

C) False the most important force is electrostatic.

D) false. Large particles can be measured with a ruler, but sublimation that are orders of magnitude smaller require instruments of great pressure and complexity.

In conclusion using the characteristics of the subatomic particle we can find what the correct answer is;  

B)  Subatomic particles don’t follow the same laws of physics as large objects.

Learn more about subatomic particles here:  brainly.com/question/3176193

NEED ASAP WILL GIVE BRAINLIST

Answers

Answer:

It have 31 electrons

It have 31 electrons

Which best defines color? (1 point)
a physical property of matter related to how a material interacts with different wavelengths
of light
a chemical property of matter related to how a material interacts with different wavelengths
of light
O a physical property of matter related to a material's ability to reflect light
O a chemical property of matter related to a material's ability to reflect light

Answers

Answer:

O a physical property of matter related to a material's ability to reflect light

Explanation:

Color is a physical property of matter.

milk is heterogeneous mixture why​

Answers

Answer:

Milk is essentially a colloidal dispersion of fat in water. ... However, the fact remains that the fat and water components cannot be mixed together from a solution. There are therefore, two distinct immiscible liquid phase's present, which is why it is a heterogeneous mixture.

I NEED HELP WItH THIS 5th GRADE QUESTION ITS VERY VERY EASY no Links PLZ and I will Report any useless AWnser PLZ HELP WILL mARK AS BRAINLIST AND Will giVE 1000 Points if correct Answer
How is the mass of a solid measured?

By estimating
With a beaker
With a ruler
With a scale

Answers

Answer:

A Beaker or graduated cylinder

Explanation:

Place the solid into the graduated cylinder. Measure the amount of water in the graduated cylinder. The product is the solid's mass wich i mean by that is what number the water level is at.

Answer:

Beaker

Explanation:

Both propane and butane are used as gaseous fuels. Which compound produce more heat per gram burned? (mass of propane (C 3 H 3 )=44.1g/mol. mass of butane (C,H,0)=

58.1g/mol)(10pts)

(Hpropane-103.8kJ/mol.) (H propane-126.0kJ/mol)

Answers

Since the heat of combustion of butane is higher than that of propane,  butane will produce more heat per gram when burned compared to propane.

The heat of combustion of a compound refers to the heat evolved when one mole of the compound is burnt under standard conditions. This heat of combustion increases from methane upwards.

Since the heat of combustion of alkanes increases according to increasing molar mass, butane will produce more heat per gram when burned compared to propane.

Learn more about heat of combustion: https://brainly.com/question/25312146

Oxygen gas is at temperature of 40c when it occupies a volume of 2.3 liters. To what temperature should it be raised to occupy a volume of 6.5 liters?

Answers

Answer:

884.6k

Explanation:

Which functional group does the molecule below have?

Answers

Answer:

B

Explanation:

We can see here that the functional group that the molecule have is: B. Carbonyl

What is a functional group?

A functional group is a specific group of atoms or bonds within a molecule that is responsible for the characteristic chemical reactions and properties of that molecule. Functional groups are the parts of organic molecules that determine their reactivity and the types of chemical reactions they can undergo.

In organic chemistry, functional groups play a crucial role in understanding the structure and behavior of molecules. Different functional groups confer distinct properties to molecules, influencing their physical properties, solubility, acidity or basicity, and interactions with other molecules.

Learn more about functional group on https://brainly.com/question/10058230

#SPJ2

BRAINLIEST TO CORRECT what would the cook time for 2 half-lives of the popcorn?

Answers

Answer:

Pop your popcorn for 2 minutes in the microwave but if you like to pop your popcorn old fashion get popcorn seeds and put them in an pot and then put a lid over it then pop it.

Explanation:

major classification of crude product​

Answers

pls mark as brainlist

Explanation:

Crude is classified, based on density, as light, medium, heavy, or extra heavy. It can also be classified, based on sulfur content, into a sour and sweet category.

6. For which movement of earth materials is gravity not the main force?
a. snow tumbling in an avalanche
b. moisture evaporating from an ocean
c. boulders carried by a glacier
d. sediments flowing in a river

Answers

B moisture evaporating from an ocean

Answer:

B

Explanation:

Moisture evaporating is going against the pull of gravity

Answer the following question attached!!

Answers

Answer:

I think It is Covalent. Not 100% sure but like 90% sure.

17) An ethanol solution has a concentration of 0.500M. What volume in liters of this solution
would contain 8.0 moles of ethanol?

Answers

Examples:Convert 750 mL to liters:

Liters of solution = mL of solution x (1 L/1000mL)

Liters of solution = 750 mL x (1 L/1000 mL)

Liters of solution = 0.75 LThe Answer:Divide the mass of the solute by the total volume of the solution. Write out the equation C = m/V, where m is the mass of the solute and V is the total volume of the solution. Plug in the values you found for the mass and volume, and divide them to find the concentration of your solution.

To calculate the Molar Concentration, we will find the molar concentration by dividing the moles by liters of water used in the solution. For example, the acetic acid here is completely dissolved in 1.25 L of water. Then divide 0.1665 moles by 1.25 L to get the molar concentration, which will be 0.1332 M.

Hope It Helpz(◕ᴥ◕)

The equations ? It’s for a chemistry class, and he said we need to explain and write down the math problems?

Answers

Answer:

I think this is because math and chemistry go together and the math problems are science related.

Explanation:

supose 10 atoms of carbon (c) recat with 20 atoms of oxegen (o) to from 10 molecules of carbon dioxide (co2). According to the law of conservation of matter, how many atoms are presented in this reaction?

Answers

Answer:

30

Explanation:

CO2 means that there is 1 carbon and 2 oxygens  in each CO2 molecule.

If there are 10 atoms of Carbon that requires 20 atoms of oxygen.

The number of atoms present is 10 + 20 = 30 atoms of any kind present. You just need to add.

a sample of glucose contains 1.250x10^21 carbon atoms, how many atoms of hydrogen does it contain?

Answers

Answer:

Hydrogen = 2.5 * 10^21

Explanation:

Chemical Formula Glucose: C₆H₁₂O₆

One of the ways you could do  this is to notice that for every carbon atom there are two Hydrogen atoms. You can state this more formally by using the formula to set up a ratio: 12/6 = hydrogen to Carbon

So if there are 1.250 * 10^21 Carbon atoms in the Glucose sample, then there will be twice as many hydrogen atoms.

H = 2 * 1.25 * 10^21 = 2.5 * 10^21 atoms

You could do this more formally by setting up a proportion.

6 Carbon / 12 Hydrogen = 1.25*10^21 /  x         Cross Multiply

6*x = 12 * 1.25*10^21                                           Combine the right

6x = 1.5 * 10^22                                                  Divide by 6

x = 2.5 * 10^21

Need Help ASAPPPP!!!!

Answers

Answer: For number 8. I think only one if not i'm so sorry also you would need 143. 0914

Explanation:

Answer:

Hello! :p

6.022 × 10^{23} atoms of copper. 143.09 g/mol

I hope this helps! Thank you so much! :)

NEED HELP ASAP WILL GIVE BRAINLIEST

Answers

Answer:

2.83

Explanation:

Molar concentration (mol/litre) = mass/molar mass × 1000/volume(in ml)

0.849 = mass/60.09 × 1000/55.5

mass = (0.849 × 60.09 × 55.5)/1000

= 2.8314

To 2 decimal places = 2.83

A candle is placed between a concave mirror and its focal point.
Which two of the following best describe the image?
O A. Enlarged
B. Virtual
C. Reduced
D. Real

Answers

Virtual and enlarged..............

What grade are you in btw ?

6. The valence number of a metallic element x is 3. What is the chemical formula of its B. Nitride?

Answers

X has valency 3 and oxide ion has valency 2
So, the formula of oxide will be X
2

O
3

How many atoms are in 25.0 grams of carbon?

Answers

mol = 25/12

= 2.083 mol

1 mol = 6.02 × 10^23 atoms

2.083 mol = X

X = 2.083/1 × 6.02 × 10^23

= 1.254 × 10^24 atoms

increasing temperature increases:
1:Enthalpy
2:Free Energy
3:Entropy
4:Specific heat​

Answers

Answer:

2 :free energy

Explanation:

I hope it is fine answer for you ☺️☺️☺️

Many fundamental concepts are at the heart of chemistry. Match the description to the name.

Answers

Answer:

you dony have a picture for me to match them

Explanation:

Which of the following ideas did Greek philosopher Democritus contribute to the atomic theory?
A. Matter is composed of only one kind of particle, which can be easily destroyed.
B. Every element has a specific type of atom, which remains the same size in all forms of matter.
C. All matter is composed of small particles, which combine to make larger objects.
D. Each object is made up of one atom, which varies in size from very small to very large.
I will mark the correct answer the brainliest

Answers

Answer:

c. all matter is composed of small particles,which combine to make larger objects

A 2.50-mL aliquot of a solution that contains 6.4 ppm iron(III) is treated with an appropriate excess of KSCN to form the Fe(SCN)21 complex and diluted to 50.0 mL. What is the absorbance of the resulting solution at 580 nm in a 2.50-cm cell

Answers

Answer:

In the final solution, the concentration of sucrose is 0.126 M

Explanation:

The number of moles of solute in the volume taken from the more concentrated solution will be equal to the number of moles of solute in the diluted solution. Then, the concentration of the first solution can be calculated using the following equation:

Ci · Vi = Cf · Vf

Where:

Ci = concentration of the original solution

Vi = volume of the solution taken to prepare the more diluted solution.

Cf = concentration of the more diluted solution.

Vf = volume of the more diluted solution.

For the first dillution:

26.6 ml · 2.50 M = 50.0 ml · Cf

Cf = 26.6 ml · 2.50 M / 50.0 ml

Cf = 1.33 M

For the second dilution:

16.0 ml · 1.33 M = 45.0 ml · Cf

Cf = 16.0 ml · 1.33 M / 45.0 ml

Cf = 0.473 M

For the third dilution:

20.0 ml · 0.473 M = 75.0 ml · Cf

Cf = 20.0 ml · 0.473 M / 75.0 ml

Cf = 0.126 M

In the final solution, the concentration of sucrose is 0.126 M

hope that help

hope you have a great Christmas

mark me brinilylist

Select the correct answer. What does the kinetic theory state about the relationship between the speed and temperature of gas molecules? A. As the temperature increases, the speed of gas molecules remains constant. B. As the temperature increases, the speed of gas molecules decreases. C. As the temperature increases, the speed of gas molecules increases. D. As the speed of gas molecules increases, the temperature becomes constant. E. As the temperature decreases, the speed of gas molecules increases.

Answers

Answer = C. As the temperature increases, the speed of gas molecules increases.

As the temperature increases, the gas molecules gain kinetic energy, therefore their speed increases.

Answer:

C. As the temperature increases,the speed of gas molecules increase.

what takes place when the pollen of the one plants move and fertilize the ovum of another plant​

Answers

In angiosperms, pollination is defined as the placement or transfer of pollen from the anther to the stigma of the same or a different flower. ... Upon transfer, the pollen germinates to form the pollen tube and the sperm that fertilize the egg

Which type of monomer combines and forms polypeptides?
A. Nucleic acid
B. Amino acid
C. Fatty acid
D. Monosaccharide

Answers

Option A is the correct answer
The answer would be
A: Nucleic Acid
<3

Dentists use a soft, clay-like material to make a filling for a cavity. The filling stays soft under the light of the dentist’s lamp, but it hardens when the dentist shines an ultraviolet flashlight on it. Why does light from the ultraviolet flashlight harden the filling when light from the lamp does not?

Answers

Answer:

the clay will be melted by the light

Explanation:

because UV rays are hot but in a way, human skin can not feal pain

Other Questions
Why is the example of DDT included in the unit?O to show that solutions have unintended consequencesto illustrate why pesticides should not be used by farmersto promote organic farming methodsO to explain the chemical elements of common pesticides which shakespearean tragedy takes place in verona, italy? The lowest range of dissolved oxygen levels which will support a diverse population of organisms is: The lowest range of dissolved oxygen levels which will support a diverse population of organisms is:A. 2-3 ppmB. 4-5 ppmC. 6-7 ppmD. 8-9 ppm When are you old enough to ask your parents to go out of state (by yourself or with a group of friends). For example, for a convention Given the following information of a trader calculate the total current assets?Motor van $3000Prepaid rates $ 500Debtors. $3000Stock. $. 700Accrued wages. $. 75Equipment. $500A. $ 4200B.$ 5000C.$2400D.$3700 Secretions from Cowpers gland perform what functions in the urethra? Check all that apply.increase acidityproduce lubricationkill bacteriaflush urine You have read the passage from True to Himself, in which a brother and sister, Roger and Kate, work to overcome the loss of their mother and the arrest of their father. At the end of the passage the main characters are cared for by Mrs. Canby but are still unsettled by their communitys perception of them. Write a continuation of the passage that describes what happens next as they continue their search for contentment. Be sure to use what you have learned about the setting, characters, and plot of the passage as you write your continuation. What was the chief job of the other members? What are all the fractions that are between 1/2 and 1. Please help me match these Your dishwasher can handle 100 plates per hour. Your stove can handle 30 meals (each on single plate) per hour. All of your meals require plates but only 60% of meals need something prepared on the stove. Which is more likely to cause a bottleneck, the dishwasher or the stove? The time that customers wait to be served at the deli for a grocery store follows the uniform distribution between 0 and 7 minutes. What is the probability that a randomly selected customer will wait more than 4 minutes at the deli?. Which of these sentences is written in the present tense? A) Lisette worked from 8:00 in the morning until 5:00 in the afternoon. B) Lisette works from 8:00 in the morning until 5:00 in the afternoon. C) Lisette will work from 8:00 in the morning until 5:00 in the afternoon. Michael consumes a 16-ounce bag of potato chips and 12-ounce bag of pretzels every day after school. How many more ounces of potato chips than pretzels will Michael have eaten at the end of a 5 day school week? A. 20 ounces B. 80 ounces C. 60 ounces D. 28 ounces heeeeeeeeeeeeeeelp 1. In "Golden Days," what is the meaning of the phrase, the hills are glad with heather?The hills make the speaker feel cheerful.The speaker enjoys the hills more in summer than winter.One can find plants on the hills. Flowers are blooming on the hills. . Which number is divisible by both three and nine?Select the Hint button to view a hint.A B C D Where does the monomyth come from, according to Jung?O A. humanity's collective unconsciousOB.existing mythological talesOc.divine inspiration from the godsODarchetypes we experience in our own lives What might be heard in a radio version of A Matter of Fact? Illuminate question Create questions using one piece of each category Your family goes to a restaurant for dinner. There are12 people in your family. Some order the chicken dinner for$14.99 and some order the steak dinner for $25. if the totalbill was $219.92, how many people ordered each type ofdinner?