Why do some substances dissolve in water, but other substances do not?

Answers

Answer 1

Answer:

It has to do with the polairity of said molelule. If you have vegetable oil, for example, it will not disolve in water because the oil is a non-polar compound, unlike water which is polar. The bond dipoles and differences in electronegetivity in the molecule results in this.


Related Questions

21/33

A crane is lowering a 50 kg box. If the crane lowers the box at a

constant speed, what is the tension Fr in the cable?

Answers

Answer:

400N

Explanation:

MY PAPER IS DUE IN AN HOUR!!!
Your challenge- Write a paper on how to build, construct, and engineer a faster roller coaster. You essay must contain 5 paragraphs minimum. Each paragraph must be 3 sentences minimum.

Potential energy, Kinetic energy, Thermal energy and friction, speed, velocity, and acceleration, and the law of conservation of energy must be the main ideas of your paragraphs

Answers

Answer:

Your kinetic energy is always proportional to the square of your speed,

no matter whether you're on a bicycle, a roller coaster, or a baby carriage.

The faster you're moving, the more kinetic energy you have.

Your potential energy doesn't depend on speed at all, only on height.

On a roller coaster, the minimum speeds are usually at the top of a hill

or a loop, so the potential energy would generally correspond to the

slowest speeds. But again, that's not because of the speed. It's because

of the height.

Explanation:

what property of matter changes depending on location?

Answers

Answer:

weight. The force with which an object near the Earth or another celestial body is attracted toward the center of the body by gravity. An object's weight depends on its mass and the strength of the gravitational pull.

Explanation:

This may be right i'm not 100%

what is the equation for newton’s second law of motion, in terms of mass, velocity and time, when the mass of the system is constant?

Answers

Answer:

Newton's second law of motion is F = ma, or force is equal to mass times acceleration.

Identify some sports or activities you can do to improve your overall health and explain how physical activity can improve your

Answers

Answer:

foot ball.

Explanation:

exercise is the specific method which helps one's own health both physical and mental health. Mental hygienic is purely rely on the physical health well-being. playing the football needs to run from one station or position to another positiin. in the due process, the flow of blood of the individual circulate faster than other rest days as a result of this, fats in the arteries are burnt down.Blood pressure remains constant as always. Diabetes will be free for the people who plays football because carbohydrates are also burnt down into simpler form of the substance thereby releasing the required amount of energy.

a large bottle contains a number of medicinal tablets each having a mass of 250mg the mass of all the tablets is 0.5kg calculate the number of tablets in the bottle​

Answers

Considering the change of units and rule of three, the number of tablets in the bottle is 2,000.

First of all, you know that each medicinal tablet has a mass of 250 mg, while the mass of all tablets is 0.5 kg. You can see that the measurements are in different units of measurement, so you must make a change of units so that they are in the same units.

So, knowing that 1 kg is equal to 1,000,000 mg, you can apply the following rule of three: if 1 kg is equal to 1,000,000 mg, 0.5 kg is equal to how many mg?

1 kg ⇒ 1,000,000 mg

0.5 kg ⇒ x mg

So: [tex]x=\frac{0.5 kgx1,000,000 mg}{1 kg}[/tex]

x= 500,000 mg

Then, you know that each medicinal tablet has a mass of 250 mg, while the mass of all tablets is 500,000 mg. Now that the values ​​are in the same units, to calculate the number of medicinal tablets you must apply the following rule of three: if 1 tablet has a mass of 250 mg, how many tablets have a mass of 500,000 mg?

[tex]number of medicinal tablets=\frac{500,000 mgx1 tablet}{250 mg}[/tex]

number of medicinal tablets= 2,000

Finally, the number of tablets in the bottle is 2,000.

Learn more:

brainly.com/question/12482948?referrer=searchResultshttps://brainly.com/question/24534599https://brainly.com/question/18328859?referrer=searchResults

Differentiate elastic potential energy and chemical potential energy​

Answers

Answer: Elastic energy is the energy store in a.. compacted spring; an extended elastic band; and a drawn bow.  

Chemical potential energy​​ is position of electrons in specific substance bonds that can be broken (energizes).

:

This stored energy is released and performs work when the elastic material reverts back to its original position. ... In comparison, chemical potential energy, is the energy released during the formation of chemical compounds.

An object has a gravitational force of 111N acting on it. If it had 4 times more mass, what would the force on it be?

Answers

Answer:

What is the gravity equation? — It is equal to 6.674×10-11 N·m²/kg². Did you notice that this equation is similar to the formula in Coulomb's law?

Explanation:

Political polls taken before major elections are examples of ________ research.

Answers

Answer:

survey

Example:

none

What row of the periodic table does this element belong?
no
14
17
O
18
15
1
16
2.
0 3

Answers

Answer:

Group 18

Explanation:

This element has a full octet, therefore it is a noble gas, being in period 18. (I think its Argon if you need that too)

Hope that helps

what work is done when a person pushes a refrigerator across the floor 12m using 480N of force ?

Answers

Answer:

W = 5760 J

Explanation:

Force (F) = 480 N Distance (d) = 12 m Work (W) = ?

Use the formula:

W = F * d

Replace with the data, and solve:

W = 480 N * 12 mW = 5760 J

The work done was 5760 Joules.

Greetings.

What do you think will happen to current if we increase or decrease the resistance of the connecting wire?​

Answers

Answer:

If resistance is increased, the current decreases and if the resistance is decreased, the current flowing through the wire increases.

Explanation:

V = IR is ohm's law which implies I = V/R, where I is the current and V is the voltage and R is the resistance. Hence, I is inversely proportional to R.

What is Obama's last name? PLZ PLZ PLZ THIS IS 500% OF MY GRADE PLS HELP PLS ​

Answers

Answer:

Barack Hussein Obama II

Explanation:

I think

explain why you cant see our reflection better in a piece of metal

Answers

Answer:

metal and glass are very smooth and reflect light back more directly this is called specular reflection if you look into a lake on a wide windless day you will be able to see your reflection because of the smooth surface of the water is producing the specular reflection rather than diffuse reflection

10. A flower pot falls off the balcony 10 m above the street. How long does it take to hit the
ground?

Answers

it will take 4.2s for the flower pot to hit the ground!

Given the following velocity time graph of 7kg object what is the impulse during segment c (from35 to 55 seconds)

Answers

Answer:

9,11 N.s.,.................

which scientist was the first one to use a telescope​

Answers

Answer:

Galileo Galilei developed the first ever telescope

what is the initial velocity of an object thrown straight up that takes 5 seconds to reach its highest point?

Answers

Answer:

50 [m/s].

Explanation:

1) formula is: V-V₀=g*t, where V₀ - final velocity (it is 0), V - required initial velocity, g≈10 [m/s²] and t - elapsed time.

2) according to the formula above:

V=g*t; ⇒ V=5*10=50 [m/s].

Match the words in the left-hand column to the appropriate blank in the sentences in the right-hand column. Use each word only once.
1. Nuclear fusion of hydrogen into helium occurs in the_______ .
2. Energy moves through the Sun's ________ by means of the rising of hot gas and falling of cooler gas.
3. Nearly all the visible light we see from the Sun is emitted from the_______ .
4. Most of the Sun's ultraviolet light is emitted from the narrow layer called the _______where temperature increases with altitude.
5. We can see the Sun's _______ most easily during total solar eclipses.
6. The _______ is the layer of the Sun between its core and convection zone.

Answers

The answer to the question are bulleted below

CoreConvection ZonePhotosphereChromosphereCoronaRadiation Zone

1. Nuclear fusion of hydrogen into helium occurs in the core.

2. Energy moves through the Sun's Convection Zone by means of the rising of hot gas and falling of cooler gas.

3. Nearly all the visible light we see from the Sun is emitted from the Photosphere.

4. Most of the Sun's ultraviolet light is emitted from the narrow layer called the Chromosphere where temperature increases with altitude.

5. We can see the Sun's Corona most easily during total solar eclipses.

6. The Radiation Zone is the layer of the Sun between its core and convection zone.

see more here  https://brainly.com/question/18767319

1. What does the endocrine system have in common with the muscular system?
A.
Both must be monitored daily.
B.
Both are directly related to movement.
C.
Both help regulate hormones in the body.
D.
Both will be healthier with regular exercise.


2. Both stretching and constricting exercises are important for muscle health.
A.
True

B.
False

Answers

Answer:

B Both are directly related to movement.

Endocrine system and muscular system are directly related to movement while both stretching and constricting exercises are important for muscle health. So, the correct options for 1 and 2 are B and A respectively.

What is Endocrine system?

The endocrine system is defined as the communication system made up of feedback loops that send hormones released by an organism's internal glands into the circulatory system, controlling distant target organs. The neurological control center for all endocrine systems in vertebrates is the hypothalamus. The endocrine glands lack ducts that would transport their output to the surface. These are known as glands without ducts.

Growth and development, metabolism, and reproduction are just a few of the essential processes in the body that are regulated by the hormones the endocrine system secretes. Movement has a close relationship with the endocrine and muscle systems.

Therefore, the correct options for 1 and 2 are B and A respectively.

Learn more about Endocrine system, here:

https://brainly.com/question/3534540

#SPJ3

Two motorcycles travel along a straight road heading due north. At t = 0 motorcycle 1 is at x = 50 m and moves with a constant speed of 6.50 m/s; motorcycle 2 starts from rest at x = 0 and moves with constant acceleration. Motorcycle 2 passes motorcycle 1 at the time t = 10.08.

Part B What is the position of the two motorcycles when motorcycle 2 passes motorcycle 1? Express your answer to three significant figures and include the appropriate units.

Part C What is the acceleration of motorcycle 2? Express your answer to three significant figures and include the appropriate units.​

Answers

Answer:

Vf = 23 m/s

Explanation:

First we need to find the distance covered by the motorcycle 2 when it passes motorcycle 1. Using the uniform speed equation for motorcycle 1:

s₁ = v₁t₁

where,

s₁ = distance covered by motorcycle 1 = ?

v₁ = speed of motorcycle 1 = 6.5 m/s

t₁ = time = 10 s

Therefore,

s₁ = (6.5 m/s)(10 s)

s₁ = 65 m

Now, for the distance covered by motorcycle 2 at the meeting point. Since, the motorcycle started 50 m ahead of motorcycle 2. Therefore,

s₂ = s₁ + 50 m

s₂ = 65 m + 50 m

s₂ = 115 m

Now, using second equation of motion for motorcycle 2:

s₂ = Vi t + (1/2)at²

where,

Vi = initial velocity of motorcycle 2 = 0 m/s

Therefore,

115 m = (0 m/s)(10 s) + (1/2)(a)(10 s)²

a = 230 m/100 s²

a = 2.3 m/s²

Now, using 1st equation of motion:

Vf = Vi + at

Vf = 0 m/s + (2.3 m/s²)(10 s)

Vf = 23 m/s

when was the Hubble telescope launched​

Answers

April 24 1990 is the correct answer

To which kinds of objects do Newton's laws of motion apply?



only objects flying


only objects going down a hill


all objects


only objects rolling

Answers

Answer:

All objects

Explanation: Did test

Công của lực điện không phụ thuộc vào?

Answers

Explanation:

what language is thathow do I literally understand that

A dog walks 100m at a bearing of 175 degrees. a) How far did it walk East?

Answers

1 kilometer

Explanation:

hope it helps

Answer:

275m

Explanation:

hope it helps

pls give me brainliest

A ball is thrown straight up from the ground with an unknown velocity. It returns to the ground after 4.0 s. With what velocity did it leave the ground?

Answers

Answer:

It must return at the same velocity with which it was thrown or else there would be a preferred direction of motion leading to perpetual motion.

a = (v2 - v1) / t = (v2 - 0) / 2 = v2 / 2    for a falling object

v2 = 2 a = 2 sec * 9.8 m/sec^2 = 19.6 m/s

You can check with

H = V0 t - 1/2 g t^2      (V0 and g are in different directions)

H = 0

V0 = 1/2 g * 4 = 19.6 m/s

. Sunita is taking a train to Madurai. Her train has stopped at Trichinapally. She is facing the direction the train will be moving in . She can see a train next to her. The train is also going to Madurai and it leaves first. As the other train leaves, it seems to Sunita as if

Answers

The relative motion of the train next to her is the motion of the other train in her rest frame.

As the other train leaves, it seems to Sunita as if her train is moving backwards

Reason:

The motion of the train Sunita is taking is given by the rate of movement of

objects outside the train from the front side of the train towards the back

side of the train, that way she can tell that the train is moving.

The motion of the other train from the rear side of the train from the rear

side of the train to the front side is a reverse motion to what Sunita

observes when the train is moving forward. Therefore, as the other train

leaves, it seems to Sunita as if her train is moving backwards.

Learn more here:

https://brainly.com/question/25100629

Use the velocity vs time graph to analyze the motion of the object.

Answers

Explanation:

the object has constant velocity for 2 seconds and it get a constant accelration (2ms-2)

What is the correct answer and try to explain if can.​

Answers

Answer:

C. Electrical

Explanation:

C because the lamp is plugged into a "Electrical" outlet meaning it uses electrical energy to produce light 'pls can i have brainliest i need it for my goal'

Why are some fibers spun together to form yarns?

Answers

Answer:

Spun yarns are produced by placing a series of individual fibres or filaments together to form a continuous assembly of overlapping fibres, usually bound together by twist. This operation is required in wool spinning because different parts of the fleece contain fibres of different length and thickness.

Other Questions
Jessica purchased a DVD that was on sale for 12% off. The sales tax in her county is 3%. Let y represent the original price of the DVD. Write an expression that can be used to determinethe final cost of the DVD. how long can freshly pumped milk stay at room temperature Can someone help please? :( The first chapter of Night establishes life in Sighet before the Jewish population was forcibly removed to Auschwitz and accompanying camps. Please describe this "before" and why it may become significant to the story. Which graph does not represent a function? Una vasca da bagno contiene 1,2 metri cubi di acqua a 35 gradi .Quanti kilogrammi di acqua contiene? Please help me I need help Which of the following were executedfor being communist If you deposit $400 into an account that offers a 5% interest rate. How much interest will you earn after 1 year? The definitions of Treaty - Creek Indians - Manifest Destiny - Describe the tense conversation between Trevors mother and the minibus driver. Record 2 pieces of information about each tribe. The Zulu and Xhosa. evaluate 8w - 2v if w = 5 and v = 3 The prices (in dollars) for a particular model of digital camera with 6.0megapixels and an optical 3X zoom lens are shown here for 10 randomly selected onlineretailers. Find 95% confidence interval of the true mean price for this particularmodel.225 240 215 206 211 210 193 250225 202 HELP MEE Provide a summary of the alternate ending of the run series complete sentence which body system initiates the process of muscle contraction Solve the equation a = m - n for the variable n. why did Nepal have several practices of constitution within a short period of time write your views in Four Points Of the sentences shown below, which sentences, when translated to Spanish, use the verb hay? (Check all that apply)1. There is a brown dog.2. They are over there.3. Are you there?4. There are three bathrooms. I'm making a movie called "witches of tommorow". Itt starts off with their mom dissapearing. How should she dissapear? help me pls........Take a look at the phylogenetic tree. Which two organisms on the tree would be expected to share the most characteristics? O cnidarians and animals with bilateral symmetry Ochoanoflagellates and cnidarians O sac fungi and cnidarians O amoebas and sponges