Chemistry Middle School

Why is it important to have a control?


IN SOUND ENERGY!!!!!!!

Answers

Answer 1

Answer:

why it is important to have control in sound of energy is because noise is airborne sound energy within a broad range of frequencies that has the potential to cause either discomfort or injury to people working in the area. specifically, noise needs to be controlled In order to *protect the hearing of the personnel who work at the facility *

Related Questions

How many atoms are in (NH4)2SO4

Answers

Answer:

15

Explanation:

1N

4H

2S

(2*4=8)O

Ammonium sulfate has 15 atoms

What are some advantages and disadvantages to the acid rain management techniques?

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Disadvantages of acid rain:
• Acid rain affects the fresh water ponds and lakes and destroys the aquatic life as some species of fishes are rare and may be extinct
• it can affect the trees particularly those that are high altitude
• It can damage historical monuments and buildings
•soil can be affected and can lead to deaths of good microbes

Advantages of acid rain:
• it makes holes in limestone below ground, which creates caves and places to store groundwater, as well as providing habitat for some species
• But the new study shows that sulfuric in acid may have benefits, limiting global warming by counteracting the natural production of methane gases by microbes in wetland areas.

Of course you should do more studying on acid rain but these are the simple ones

Acid rain management techniques include protect plants from acid rain on falling on them.

What is acid rain?

Rain formed when sulfur dioxide and nitrogen oxide react with chemicals in the atmosphere like water,oxygen and carbon dioxide to form sulfuric acid and nitric acid and then falling to ground containing these acids is called acid rain.

Acid rain alters the environment the environment tremendously by damaging plants and aquatic ecosystems.Plants require a specific pH of soil for their optimum growth and nutrition.

Due to acid rain, the acidity of soil increases rendering it unfit for plant growth.Similarly, pH of water also increases which affects the survival of aquatic ecosystems.

It also damages the the monuments made of metals, marbles .Taj Mahal made up of white marble has turned yellowish due to acid rain.

Learn more about acid rain,here:

https://brainly.com/question/22143130

#SPJ2

Question 6(Multiple Choice Worth 3 points)
(02.01 MC)

What is the landform in the image

Dune
Hill
Plateau
River

Answers

All of the above, is that an answer?

Answer:

C (Plateau) :)

Explanation:

Because a plateau is an area of relatively level high ground. so that means the answer is plateau!

How many atoms doesCo(NO3)2 have

Answers

The answer is 9. Calcium nitrate is made up
of 3 different elements that equal 9 atoms.
9 (I had this on a test and got it right)

Compound: ________________
. Found in apatite soil, contain phosphorus (P)

Answers

Answer:

Ca5 or Apatite

Explanation:

Why is it important to have a control?
IN SCIENCE.....SOUND CONTROL
P.S don't make it sound like ur a genius

Answers

its important to have control so you can predict or cause what happens to what you’re doing

I need help assappp
...........

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Disagree is the awnser to this question
the answer is disagree

Use the images below to complete the information on the table and answer questions 1-5.

Answers

Answer:

Proton: Positive

Electron: Negative

Neutron: No charge

Proton positive
Electron negative
Neutron neutral

Compound: ________________
. Found in soil; contains hydrogen (H) and oxygen (O)

Answers

Answer:

hydrogen im doing the same thing but diffrent

Explanation:

Hydrogen peroxide is the compound found in soil containing hydrogen and oxygen

Leandra is baking cookies, and they are ready to come out of the oven. Before she takes them out of the oven, she puts oven mitts on. Why does Leandra do this?

A Heat energy moves from warmer objects to cooler ones.
B Heat energy moves from cooler objects to warmer ones.
C The light energy from her hands will transfer to the cookies.
D The coolness of her hands will transfer to the cookies and will make them cold.

Answers

Answer:

A.

Explanation:

Heat can't come from a cold object but can from a warm of hot one.

Answer: A

Heat moves from the hotter object out and distributes into colder objects. Also heat can’t come from a cold object. You can apply this to a real life scenario as you put oven mitts on so you don’t burn yourself.

here the answers for what is radiation?

Transfer of heat through objects touching the source
Transfer of heat through direct physical contact
Transfer of heat through electromagnetic waves
Transfer of heat through the movement of particles

Answers

Transferring heat through electromagnetic waves
C . Transfer of heat through electromagnetic waves

Radiation is said to be process where heat is transferred between two objects in the form of electromagnetic waves . In radiation two object dont need to be in direct physical contact for the heat transfer to happen .

I will brainly
And 5 star rate!!

Answers

most of them explode is the answer to that question
one or more substances are converted to a different substance. an example could be ( iron + oxygen = rust

What is Litmus Paper?

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paper stained with litmus which is used to indicate the acidity or alkalinity of a substance. Blue litmus paper turns red under acid conditions, and red litmus paper turns blue under alkaline conditions.

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Litmus is a natural dye which is extremely from lichens. it is the most commonly used indicator. Litmus is available in the form of blue and red litmus paper.

What can the student conclude about the experiments? (Attachment)
I WILL MAKE YOU BRAINLIEST

A. Experiments 1 and 2 show chemical changes because bubbles were produced.

B. Experiment 1 shows a physical change because no new substances were produced, and experiment 2 shows a chemical change because a new substance was produced.

C. Experiment 1 shows a chemical change because bubbles were produced, and experiment 2 shows a physical change because a liquid turned into a solid.

D. Experiments 1 and 2 show physical changes because no new substances were produced.

Answers

Answer: B. Experiment 1 shows a physical change because no new substances were produced, and experiment 2 shows a chemical change because a new substance was produced.

Explanation: a physical change is reversible

chemical is 2 or more substances combined to make a reaction such as bubbling, change of color or temperature

12 Points/Brainliest

Answers

Answer:

In fact, at the sea level, the the sea water boils at 100 degree C where atmospheric pressure is normal. However, the boiling takes place at a lower temperature at the top of a mountain due to low pressure. In other words the boiling is faster at the top of a mountain than that at its foot.

Explanation:

Hope this helped you :)

There is many sea levels

In which direction does heat energy move?

A From cold objects to colder objects
B From colder objects to warmer ones
C From warmer objects to colder ones
D From warm objects to warmer objects

Answers

Answer:

B

Explanation:

Because when a cold object is cold it start to get warm because Of the air.

and it start to warm and it gets warm.

C



Heat usually flows to colder objects in order to make them both the same temperature and when the colder object finally gets hot and is the same temperature as the hotter object it stops flowing hope this helps:)

A theory usually has observation and reasoning in its favor, although it may not be experimentally verified.

True or False

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yes i believe it’s true
I believe it’s true :)

Where is the DNA stored in a cell?

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Answer: nucleus  

Explanation:

The dna cells are in the Nucleus

Which oneeee is ittt!!!!

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Answer:

Disagree.

Explanation:

Nothing would remain. Everything on Earth is made up of atoms. The chair consists of only atoms. So, if you remove all of the atoms, nothing would be left! Hope this helps.

The answer would be disagree

Sugar, C6H12O6, is made of carbon, hydrogen, and oxygen atoms. Sugar is — (I WILL MAKE U BRAINLIEST


A. a compound because it is made of two or more atoms chemically combined and its parts cannot be separated by physical means

B. a mixture because it is made of different kinds of atoms but they are not chemically combined

C. a solution because it dissolves when mixed with water

D.an element because it is a pure substance whose parts cannot be separated

Answers

Sugar is a compound because it is made of two or more atoms chemically combined and its parts cannot be separated by physical means.

Answer:

A

Explanation:

D. is not the answer as there are many elements that go into Sugar

C. Is not the answer because it is not a solution

B. Is not the answer because they are not physically combined but chemically

Therfore A is the answer

Carlos listed some advantages and disadvantages of using nonrenewable resources.



Which best describes Carlos’s error?

Answers

Answer:

The answer is ores must be processed to make useful products!

Explanation:

Which oneeeeeeeeeeeee

Answers

Answer:

Agree

Explanation:

This is what I found.

Air is actually a collection of very small molecules; oxygen gas and nitrogen gas are molecules made from two atoms each. Only the noble gases readily exist as single atoms.

Hope this helps.

Answer:

Air is actually a collection of very small molecules; oxygen gas and nitrogen gas are molecules made from two atoms each. Only the noble gases readily exist as single atoms.

Explanation:

I hope this helps. I'm not sure because it would depend on the gas. But I would go with disagree personally.

Select the substance or substances that are homogeneous mixtures

Question 22 options:

Solution


Compound


Colloid


Molecule


Suspension

Answers

Answer:

colloid, suspension, solution

Colloid , solution, suspension . I hope it helps you

Steps of photosynthesis:

___ ATP molecules form.
___ Sugar molecules form.
___ Chlorophyll absorbs light energy.

Answers

Answer:

Chlorophyll absorbs light energy, ATP molecules form, sugar molecules form. I'm pretty sure this is correct, but if it is not I'm sorry...

Explanation:

1. Chlorophyll absorbs light energy
2. ATP molecules form
3. Sugar molecules form

If a average person and a trained athlete where to exercise which pule rate would be slow and which pulse rate would be fast?

Answers

the average person would have a higher pulse rate when exercising because their body is not used to it, which makes it have to work harder to maintain that status

the athlete would have a slower pulse rate because their body is acclimated to the exercise and does not need to work as hard to maintain their body

2 more questions left

Answers

Answer:First one is 3

35 POINTS AND BRAINLIEST!
Which description is not a property of an acid?
A. pH lower than 7
B. Turns litmus paper blue
C. Sour taste
D. Corrosive

Answers

Answer:

B turns litmus paper blue

Explanation:

B is the answer, hopefully that helps you!

Think of a creative title for a video about the states of matter

Answers

Answer:

States of life ?

Explanation:

maybe this ?

Please answer one or both of the questions below

Answers

Answer:

a=2 b=1 c=3 im litterally takeing the quiz right now

Explanation:

Answer:

a=2 b=1 c=3

Explanation:

use your brain :)

When a log burns in a fire, a a physical change has occurred. b mass is gained. c new substances are formed.

Answers

Answer: technically it is chemical and physical change

Explanation: chemical bc it’s burning and physical bc it’s going from a log to ashes

Answer:

C! New substances are formed.

Explanation:

The burning log will release carbon dioxide, which is a new substance that was never there in the first place.

Other Questions
Solve for 50 points and brainliest!10-3-7+18=6-3-2+13= Fill in the blankThe 1st era of federalism was known as Dual Federalism Federalism (or layer cake federalism). Here, courts used __________ interpretation of the commerce clause. Each level of government had roles that rarely overlapped. The manufacturer of a soccer ball claims that only 3% of the soccer balls produced are faulty. An employee of this company examines the long-run relative frequency of faulty soccer balls produced as shown in the graph.A graph titled Faulty Soccer Balls has frequency on the x-axis, and probability on the y-axis. The graph levels out around y = 0.06.Which conclusion can be drawn from this graph?The companys claim seems to be true because the graph shows that when 50 soccer balls were tested, only about 3% of them were faulty.We should not believe the companys claim that only 3% of their soccer balls are faulty because this graph shows a continuous increase in probability.Because the graph shows that the probability of producing a faulty soccer ball is 0.03, we can believe the companys claim that only 3% of the produced soccer balls are faultyThe graph shows that the probability of producing a faulty soccer ball is about 0.06; therefore, we should not believe the companys claim that only 3% of the produced soccer balls are faulty. For what reasons were the thirteen colonies founded The sum of 7 and Chau's height is 48. Solve the system of equations by substitution. x + y = 27 y = 8x 4. Imagine that you are the owner of an art studio where artists come and share the space tocreate art What are some rules that you would make to keep your art studio safe andrunning smoothly? Why are these rules important? List and describe at least three rules.HELP PLEASE NOW IM CONFUSED I JUST NEED HELP TGE TEST HAS 2 MORE MINUS FIR ME TO FINISH PLEASEEEE Summary QuestionDescribe what occurs during the process of mitosis. 1+1+2+3+4+5+6+7+8+9=? what is marketing information system HURRYY PLS!!!!Which of the following represents an accurate description that applies to both India and China during the classical era? United States Exports to Warring Nations, 1914-1916Nation191419151916Great Britain $594,271,863 $911,794,954 $1,526,685,102France$159,818,924 S369 397 170 $628,851,988Italy$74,235,012 $184.819.688 $269,246,105Germany$344,794,276 $28,863,354 $288,899"Italy joined the Allies in 1915.Source: Thomas A. Bailey et al., The American Pageant,Houghton Mifflin, 1998 (adapted)Based on the chart above, what conclusion can be drawn by comparing the value of U.S.exports to Germany to the value of exports to Great Britain between 1914 and 1916?The United States adopted a policy of neutrality.The Germans stopped trading with the U.S. during the war years.O The United States maintained trade with both nations.The United States expanded its economic alliance with Great Britain. Simplify: (1/3 - 2b)27...................................... Order these in descending order (greatest to least). 3/20, 0.15%, 0.015 All students perceive poor grades as disappointing.Please select the best answer from the choices providedF 5. What relationship do you notice between where people live and Chinas rivers system? what is the 9th term in the sequence -1, 4, -9, 16, -25,...? A washer and a dryer cost $796 combined. The washer cost $54 less than the dryer. What is the cost of the dryer? Could someone please helpppp? Which section of the Declaration of Independence announces that thecolonies consider themselves an independent country and includes apromise from the Founding Fathers?O A. The conclusionO B. The preambleO C. The list of grievancesO D. The introduction