Chemistry Middle School

PLS HELP 20 POINTS I WILL ALSO MARK BRAINLIEST
how does energy transfer through a system? Is all the energy conserved?

Answers

Answer 1

Answer:

Explanation:

The total change of energy in any system is always equal to the total energy transferred into or out of the system. This is called conservation of energy. ... Energy can also be transferred from place to place by electric currents. Heating is another process for transferring energy.

Answer 2
Equally Energy system

Related Questions

pls answer the question plss

Answers

The Density Calculator uses the formula p=m/V, or density (p) is equal to mass (m) divided by volume (V). The calculator can use any two of the values to calculate the third. Density is defined as mass per unit volume. That sound give you the answer. Hope this Helps!
Yup and tanks it’s the same answer but I’m to lazy to answer right now

Help me please and only answer if you know what the answer is

Answers

They have similar chromosomes

I need help due today!!!!!

Answers

Answer:5

grams per cubic centimeter

Explanation:

Note:

1

ml

=

1

cc

If the water rose

7

ml

−

2

ml

=

5

ml

then the stone had a volume of

5

ml

or

5

cc

With a mass of

25

g

it must have a density of

XXX

25

g

5

cc

=

5

g/cc

Explanation:

HURRY NOW Scince 20 points

Answers

I am also pretty sure the answer is B, but give the answer above me Brainliest. Have a great day
I usually don’t like to answer questions that already have one but I would agree. B is probably what they’re looking for.

Which Item is denser than liquid water?

A. Metal fork
B. Plastic cup
C. Paper plate
D. Wooden spoon

Answers

Answer:

B

Explanation:

metal is denser, wood will float and so will paper and plastic

Plastic cup is more dense then liquid water

help mehhh i will give out BRAINLEIST

Answers

Answer:

For the after reading part:

D

A

A

A

D

D

D

A

D

A

Explanation:

I think its right-

Yes paperclip u are right, sorry I was gonna answer too but they beat me

A new wind farm that uses wind energy to generate electricity has to be set up in an area. Which of the following areas would be best suited to set up the wind farm?

possible answer: 1. Along the coast
2. In a forest
3. Neighboring a city
4. Near a coal mine

Answers

the answer is 1 along the coast

1. along the coast. there is strong reliable wind there

Our solar system consits of eight planets. Which phrase correctly describes a planet?
A. a large celestial body that is composed of gas and emits light
B. any one of the primary bodies that orbit a star
C. many stars held together by gravity
D. space and all the matter and energy in it

Answers

B. (twenty characters blah blah blah) Have a great day/night!

B lol the answer is b have a good day

all light is the same whether it comes from the sun a light bulb or anywhere

do you agree with this statement explain ​

Answers


NOT ALL LIBHT SOURCES ARE THE SAME

No, the light from a lightbulb or many other electronic stuff, it’s light brightness depends on 1. The object 2. The amount of electric. The sun on the other hand can burn your eyes and skin just by it’s heat waves and bright glare. The sun is the brightest thing.

All light being the same whether it comes from the sun a light bulb or

anywhere is False.

What is Light energy?

This is a type of kinetic energy which makes light to be visible to the eyes.

There are different sources of light which include:

SunElectric bulbCandle etc.

Light from bulbs and Sun involve photons being emitted at different

intensities which is why the light from both sources are different. The

Sun has more intensity and a different source than the Light bulb.

Read more about Light energy here https://brainly.com/question/8181719

What is the density of an object whose mass is 120 grams and whose volume is 60 cm3? (D=m/v)

Answers

Answer:124.86 ib/cu ft

Explanation:

Answer:

its 2 g cm^-3

Explanation:

density = mass / volume

120 g / 60 cm^3 = 2 g cm^-3

How does a compound differ from a mixture?
The components of a mixture are in a fixed ratio
The components of a compound are in a fixed ratio

Answers

Answer:

In a mixture, each substance is still the same and don't really combine. In a compound, the substances are chemically combined (so the substances that went in have technically changed).

Explanation:

A compound contains atoms of different elements chemically combined together in a fixed ratio. While on the other hand, a mixture is a combination of two or more substances where there is no chemical combination or reaction.

How can a charged balloon attract a wall without any contact?

The positive charges of the uncharged wall move to the outside.
The wall changes shape and the positive charges move to the inside.
The negatively charged balloon repels and moves away from the wall.
A positive charge in the balloon attracts the negative charges in the wall.

Answers

Answer:

Because it is charged with the opposite type of energy to the wall.

Answer: A

Explanation: The positive charges of the uncharged wall move to the outside.

why does Australian get more uv light than othet parts of the world?​

Answers

I definitely agree whithe the first person that the earths orbit brings that part closer to the sun

PLEASE HELP BRAINLIEST 4 BEST ANSWER
Use the site above and pick any 5 elements and write a research report for 5 different elements. ( 3 sentence minimum per element)

Include the Name, Symbol, Atomic Number, Atomic Mass, and Common Human uses of element, if its present in a common molecule and if its dangerous to humans.

Answers

Answer:

which site

Explanation:

Provide the site and i will be glad to help you!

True or false. Nonmagnetic Rare Earth Metal Samarium can be used to repel sharks.

Answers

Answer:

false

Explanation:

Answer: i think false

Explanation:

ik im not right.. or am i?

Answers

Answer:

C

Explanation:
Average Speed = total distance covered / total time taken

the distance she covered didnt change because the race track stayed 5km.
However, she did take a longer time to complete the race because she stopped in the middle to tie her shoes
Therefore, C is the answer.

identify the location of each element group on the periodic table. ​

Answers

what? sorry i’m confused
The answer is metalloids.

Which of the following groups of resources helps generate electricity and does not cause a lot of pollution?

possible answer: 1. Phosphate, oil, and water
2. Phosphate, oil, and silica
3. Wind, solar, and silica
4. Wind, solar, and water

Answers

i think 4 or 3 but not sure so dont trust me

Answer:

4

Explanation:

wind is used to run wind mills

solar the sun ray are converted into electricity using solar panel

water produces hydropower

Select all of the elements that are classified as metals.


gold

helium

sodium

aluminum

sulfur

Answers

Answer:

Gold, sodium, aluminum

Explanation:

The metals are located on the left side of the periodic table

Gold,sodium,aluminum are the metals.

The periodic table's left side is where the metals are found.

Silvery-white and light in weight, aluminum is a metal.

Sodium is a soft metal that tarnishes when exposed to air in a matter of seconds

Which  elements are metallic?

Iron.Uranium.Sodium.Aluminum.Calcium

Silvery-white and light in weight, aluminum is a metal. It is supple and moldable. Cans, foil, culinary utensils, window frames, beer kegs, and airplane parts are just a few examples of the many goods that employ aluminum. This is as a result of its distinctive attributes.

Sodium is a soft metal that tarnishes when exposed to air in a matter of seconds. With water, it also reacts strongly. Sodium is employed as a reagent in the chemical industry and as a heat exchanger in some nuclear reactors. Salts of sodium, however, are more useful than the metal itself.

To  learn more about metals refer to:

https://brainly.com/question/4701542

#SPJ2

Based on the food web, which of the following would occur if the snake population was to increase?



a
The hawk population would increase
b
The mouse population would increase
c
The hawk population would decrease
d
The grasshopper population would decrease

Answers

Answer:

c i think

Explanation:

becuse hawks hunt snakes for food  aslo becuse

Answer:

its A. The hawk population would increase

Explanation:

because if there is alot of snakes then the hawks will have more to eat

*WILL GIVE BRAINLISET* PLEASE ANSWER

Newton's second law of motion is F = ma.

A net force of 60 N north acts on an object with a mass of 30 kg. Use Newton's second law of motion to calculate the amount of acceleration the object will experience. Then explain how the amount of acceleration will change if the net force or the mass of the object increases.

Answers

Answer:

this was asked before here the screenshot

If F=ma then A= f/m so 60 divide 30 = 2
If force increases then acceleration will increase too example 90/30=3
But if mass increases acceleration decreases example 60/60 =1

A student is trying to lift a metal ball off the floor. The student is unable to lift the ball after several tries. Which of the following forces is most likely opposing lifting the ball?

possible answer: 1. Electric force
2. Frictional force
3. Gravitational force
4. Magnetic force

Answers

Answer:

i think it is three

Explanation:

it is a meatal ball soits going to be heavy and if it was 1 than his hands would be electricuted and its a meatal ball so if it is stationar than it should have no friction and if it had magnetic force aplied than it would be roling

Answer:

3

Explanation:

Can you match them to the right one and right answer will get brainliest if you dont know pls dont answer thxs

Answers

The Answer is: 2,3,1
It’s gonna be - 2,3,1

Which →two← factors decrease as the kinetic energy of the particles in an object decreases?

a

The object's weight.

b

The object's temperature.

c

The speed of the particles.

d

The size of the particles.

Answers

Answer:

a and c

Explanation:

I'm only sure on a but c is the second best so Yea don't completely trust it

The answer is A and C. I hoped this helped have a great day. :)

Please help me I will give you the brain thing with extra points if you help me, please. I need to get this right. 9/10

Answers

Answer:B

Explanation:

got an 90 on the test

The answer would be a

Which of the following would occur if the Thrush population was to suddenly decrease?



a
The population of Eagles would increase
b
The population of Eagles would decrease
c
The population of Dragonfly would decrease
d
The population of corn would increase

Answers

Answer- B

Reasoning: Since Eagles directly eat Thrush, their populations would decrease.

The other answers are wrong because with the first choice, Eagles would not increase in population if one of their food sources were removed. For the third choice, Dragonflies wouldn’t increase. Since Thrush eat Dragonflies, the disappearance of Thrush wouldn’t hurt the population of Dragonflies. Lastly, The last option is wrong because corn isn’t reliant on animals to survive. If Thrush disappear, corn will not be affected. This leaves B. to be the answer.

plz i need help please help​

Answers

Non-metals I pretty sure
Non metals have a nice day

B in total
pot
5. Lindsey built a clock with 16 divisions, which we'll call Lindsey Hours.
Just like our clocks, the hour-hand on Lindsey's clock goes around twice
per day. How many Lindsey Hours are in one day?
16
-12

Answers

16 x 2 = 32 . So, approximately, 32 Lindsey Hours in a day. Correct me if I’m wrong eheh
32 is the correct answer

what is an example of conduction?

A: how energy travels from a campfire to your body.
B: how the first few centimeters of the troposphere get heated.
C: how most of the energy from the sun travels to Earths surface.
D: how energy moves along with the rising of carbon dioxide particles in the air.

Answers

Answer:

The correct answer is A.

Your answer would be
A: how energy travels from a campfire to your body

Which of the following statements is true?

A. A solution is a pure substance
B. A solution is a mixture
C. A solvent is dissolved in the solute
D. A solution has the same properties as a colloid

Answers

Answer:

c

Explanation:

In chemistry, a solution is a special type of homogenous mixture composed of two or more substances. So I believe that it would be B. If it said as such a solute then it would be C.
Other Questions
Graph the system of linear inequalities.y > 2x 2y < 2x + 3 Select the correct text in the passage.Which sentence in this excerpt from "The American Crisis" by Thomas Paine illustrates that it is a persuasive essay?I shall conclude this paper with some miscellaneous remarks on the slate of our affairs; and shall begin with asking the following questiomWhy is it that the enemy hath left the New England provinces, and made those middle once the fear of war? The answer is easy, New Englis not infested with Tories, and we are. I have been under in raising the cry against these men, and used numberless arguments to shew ttheir danger.... The period is now arrived, in which either they or we must change our sentiments, or one or both must fall. And what isTory? Good GOD! what is he?I should not be afraid to go with a hundred Whigs against a thousand Tories, were they to attempt to get intarms. Every Tory isa coward, for a servile, slavish, self-interested fear is the foundation of Toryism: and a man under such influence, thouhe may be cruel, never can be brave.But before the line of irrecoverable separation be drawn between us, let us reason the matter together: Your conduct is an invitation to tenemy. yet not one in a thousand of you has heart enough to join him. Howe is as much deceived by you as the American cause is injureyou. He expects you will all take up arms, and flock to his standard with muskets on your shoulders, Your opinions are of no use to him,unless you support him personally: for 'tis soldiers, and not Tories, that he wants...Quitting this class of men, I turn with the warm ardor ofa friend to those who have nobly stood, and are yet determined to stand the maout: I call not upon a few, but upon all: not on this state or that state, but on every state: up and help us; lay your shoulders to the wheelbetter have too much force than too little, when so great an object is at stake. Let it be told to the future world, that in the depth of wintewhen nothing but hope and virtue could survive, that the city and the country, alarmed at one common danger, came forth to meet andrepulse it. Say not that thousands are gone, turn out your tens of thousands: throw not the burden of the day upon Providence, butyour faith by your works," that God may bless you. It matters not where you live, or what rank of life you hold, the evil or the blessing wireach you all. The far and the near, the home counties and the back, the rich and the poor, will suffer or rejoice alike. The heart that feenow is dead; the blood of his children will curse his cowardice, who shrinks back at a time when a little might have saved the whole, andmade them happy. Ilove the man that can smile in trouble, that can gather strength from distress, and grow brave by reflection. Tis thebusiness of little minds to shrink: but he whose heart is firm, and whose conscience approves his conduct. will pursue his principles untdeath. What is the area of a circle is the radius is 8 What 3 words describe the Greasers from the book/movie: ``The Outsiders``? Why is it ironic that Pip's benefactor is the convict?Group of answer choicesPip, despite all of his snobbery and finery, got his fortune from a class of person Pip disdains and shuns.The convict is the epitome of what Pip wants to become and through his money, he will accomplish that.The class of people he loves is actually the same as his benefactor.It is not ironic. -2v3 + v75How do I solve this and what would be the answer Answers are either 3 325 3-25 3-3 3 PLEASE HELP ANYONE!!!Write the exponential regression representing the population of Lazy Town as a function of time in years define seperation by evaporation I NEED AWNSER IMMEDIATLY WILL GIVE BRAINLIESTDuring the Age of Exploration, Europeans began to colonize other parts of the world to increase their wealth and power. Colonization occurs when one nation takes complete control of the people of another nation or region. Do you think Europeans were right to colonize other people? Consider their world view at that time compared to our own. Is there some way the Europeans could have achieved their goals without colonizing other people? A social studies teacher cautions students to be careful when using primary sources in their study of history. The teacher makes this statement becauseall primary sources1are fragile and easily damaged2require analysis and interpretation3present accurate and balanced views4serve as a means of propaganda and distortion Construct a quadrilateral ABCD, where AB = 7 cm, AD = 6.4 cm, angle A = 75, angle=100 and angle D = 110. What is the measure of angle angle C? Determine the force of gravitational attraction between the earth (m = 5.98 x 1024 kg) and a 70-kg physics student if the student is in an airplane at 40000 feet above earth's surface. This would place the student a distance of 6.39 x 106 m from earth's center. at the beginning of the most dangerous game sagner rainsfor and general zaroff would both agree that A truck that transports refrigerators has a storage compartment 12 feet high by 9 feet wide by 51 feet long. Each refrigerator takes up 54 cubic feet. How many refrigerators can be packed on the truck if there is no wasted space?Enter a unit that best describes the number. What does the simile fly like the wind mean A is directly proportional to B when A = 12, B = 3 a) find a formula for A in terms of B b) find the value of A when B = 5 c) find the value of B when A = 36 Which country has a government based on the parliamentary system?A)RussiaB.)France C.)Germany D.) UKGermanyD)United Kingdom how confidence and humility gotogether in the best leaders. A puzzle has 80 pieces. Carlos has completed 60% of the puzzle. How many pieces of the puzzle has he put together? x^2+5x-6 how do i factor this