How is an electromagnet similar to and different from a regular magnet?

Answers

Answer 1

Answer:

that the electromagnet can have a magnetic field when an electric current flows through it and disappears when the flow of the current stops, while permanent magnets are made up of magnetic material that can be easily magnetized and can create

Explanation:


Related Questions

which of the following groups use accounting information a.the tax department. b.business owners. c.investor. d.all of above​

Answers

Answer:

D

Explanation:

if they didn't all use accounting skills and info I'd be considered

Please help!!
Trevor watches as a freight train passes. He counts eight identical black railroad cars, then a red car, followed by several more black cars. Which type of organic compound does the train most closely model?

A. an alkyl halide

B. an aldehyde

C. an ether

D. a carboxylic acid

Answers

Answer:

C. an ether

Explanation:

Consider the chemical equilibrium of a soap that is present in its aqueous solution. C17H35COONa(aq) Double headed arrow. C17H35COO–(aq) Na (aq) sodium stearate (soap) stearate ion What will happen if a large quantity of NaCl is added to the aqueous solution? The equilibrium will shift to the right, favoring the dissociation of soap in aqueous solution. The equilibrium will shift to the left to such an extent that it leads to the precipitation of solid soap. The equilibrium will not be affected by the addition of NaCl to the solution. The equilibrium will be permanently destroyed by the addition of NaCl.

Answers

The chemical equilibrium has the concentration of reactants and products equal. The addition of NaCl shifts the equilibrium towards the left, leading to soap precipitation.

What is a common ion effect?

The chemical equation for the reaction is:

[tex]\rm C_{17}H_{35}COONa\;\leftrightharpoons C_{17}H_{35}COO^-\;+\;Na^+[/tex]

The addition of NaCl to the reaction results in the dissociation of Na and Cl ions.

At the equilibrium condition, the concentration of all the species is equal. The addition of NaCl results in an increase in the product concentration in the solution, with the common ion effect.

The increase in the product concentration results in the reaction moving towards the reactant formation and process in the left direction.

Thus, the addition of NaCl shifts the equilibrium towards the left, leading to soap precipitation. Thus, option B is correct.

Learn more about equilibrium, here:

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Answer:

the correct answer is (B The equilibrium will shift to the left to such an extent that it leads to the precipitation of solid soap.)

i just took the test

Explanation:

1.Which of these statements about the
conservation of mass is not correct?
A.The mass of the products will be equal to the
mass of the reactants.
B.During a chemical reaction, no mass is
created or destroyed.
C.There will be the same number and type of
atoms before and after a chemical reaction.
D.All of the above are correct.

Answers

D.all of the above are correct

The atomic number of an atom or element is the number of.

Answers

Answer: the number of a chemical element in the periodic system,

Explanation:

Sofia is doing a presentation on the history of blood analysis. Who is she MOST likely to mention in her presentation?

A. Karl Landsteiner
B. Sir Edward Henry
C. Cora Crippen
D. Trenton Luminol

Answers

Answer:

A. Karl Landsteiner is the most likely for her to mention.

The ph of water is approximately 7 which means it is:.

Answers

Answer: Neutral

Explanation: This is because, in the ph scale, greater than 7 indicates base or alkaline (basic), while less than 7 indicates that it is acidic.

A car is driving down the road. It starts from rest. It speeds up to a speed of 10 m/s.
Does the car accelerate? If so, is its acceleration positive or negative? Explain

Answers

Answer:

If the speed is increasing, the car has positive acceleration. When the car slows down, the speed decreases. The decreasing speed is called negative.

SOMEONE HELP ME PLEASE

Answers

320.15 kelvins (i believe this right)

confused as heck. please help!

Answers

Answer: that all thre water cycle and C is vaporation

Explanation:

Antibiotics are drugs used to kill bacteria. Some bacteria develop mutations that make them resistant to
antibiotics.
Which of the following BEST explains this mutation with respect to bacteria?

The mutation is a harmful mutation since many bacteria will be killed by antibiotics

The mutation has no effect since the bacteria cannot be targeted by an antibiotic.

The mutation is a helpful mutation since it helps bacteria to survive and reproduce.

The mutation is a helpful mutation since humans can survive longer.

Answers

The mutation is a helpful mutation since it helps bacteria to survive and reproduce.

I need help!
Examine the general structure of a molecule.
Which functional groups are in this molecule?
A. an alkyl halide and an alcohol
B. a carboxylic acid and an amine
C. an amine and an ester
D. an aldehyde and a carboxylic acid

Answers

Answer:

B,) a carboxylic acid and an amine

Explanation:

A functional group is an atom or group of atoms inside a molecule that has comparable chemical properties anytime it appears in numerous compounds. When other parts of the molecule are not similar, some functional groups react in certain manners.

Carboxylic acid is a carbonyl-containing functional group, with carbon atom bonded to an hydroxyl group on one side and on the other side is either a carbon or hydrogen atom.  

An amine group is composed of a nitrogen atom bonded to a combination of carbon and hydrogen atoms.

Answer:

a carboxylic acid and an amine

Explanation:

How do plants affect the amount of carbon in Earth’s atmosphere?

Question 1 options:



Plants increase the levels of carbon dioxide in the atmosphere due to the process of photosynthesis.



Plants have no effect on the amount of carbon in the atmosphere



Plants decrease the levels of carbon dioxide in the atmosphere due to the process of photosynthesis.

Answers

Answer:

c

Explanation:

plants decrease the levels of carbon dioxide in the atmosphere due to the process of photosynthesis

1.A space shuttle's wings are useless as it travels around the exosphere. Explain, in your own words, why the wings are so useless and how the shuttles can move around.

2.Explain, in your own words, the thermosphere and the stratosphere are our hottest atmosphere layers.

3.Explain, in your own words, how and why “shooting stars” occur. For example, why and what causes meteors to burn up.

4.Explain, in your own words, the importance of our ozone layer in the stratosphere.

5.Explain, in your own words, why weather only occurs in the troposphere.

PLEASE HELP!!!!! Use your own words please! I will give the brainiest to the person who answers it!

Answers

Thrust acts on the spacecraft and propels in the space.

How space shuttles move?

1. The force created by the shuttle's engines in expelling the burning fuel produces an equal thrust in the opposite direction. This thrust acts on the spacecraft and propels in the space.

2. The thermosphere and the stratosphere are our hottest atmosphere layers because these two layers are present near the sun as compared to other layers of atmosphere.

3. When the meteors hit the atmosphere, meteors rub against air particles and create friction which is heating the meteors. The heat vaporizes most meteors, creating what we call shooting stars.

Learn more about atmosphere here: https://brainly.com/question/24925283

Results in a net release of energy

Catabolic
Anabolic

Answers

Catabolic reactions break down large organic molecules into smaller molecules, releasing the energy contained in the chemical bonds. These energy releases (conversions) are not 100 percent efficient. The amount of energy released is less than the total amount contained in the molecule.

water is stored where until it is used by the cell

Answers

Answer: The water Inside the cell is stored inside the vacuole(s)

Explanation:

Hope this helps :)

Please help me I just need the answers please no need for the explanation

Answers

Answer:

C = q / m x dT

Explanation:

By definition, specific heat, C = heat absorbed, q divided by mass, m and change in temperature, dT

So C = q / m x dT

Answer:

The specific heat capacity of a material is the energy required to raise one kilogram (kg) of the material by one degree Celsius (°C)

Formula:

energy (J) = mass (kg) * specific heat capacity (J/kg°C ) * change in temperature

required answer:

C = q  / m * dT

using the formula:

C =   [tex]\frac{102}{12.5*(55-22)}[/tex]

C = 0.2473 J/kg°C

             ↑

This is the specific heat capacity of copper

What is the density of a cube that has a mass of 25 grams and a volume of 125 cm3​

Answers

Question:- What is the density of a cube

Given:-Mass = 25 grams Volume = 125 cm³Answer:-

Formula :- [tex]Density = \frac {Mass}{Volume}[/tex][tex]Density = \frac{25}{125} \frac{grams}{cm {}^{3} } \\ Density = \frac { \cancel{25} {}^{ \: \: 1} }{ \cancel{125} ^{ \: \: \: 5} } = 0.2 \: g \: cm^{ - 3} [/tex]

To convert it in Kg/m³ divide by 1000 and multiple with 10⁶

[tex]Density = 0.2 \: \times \frac {{10}^{6} }{10 {}^{3} } = 0.2 \times {10}^{3} \\ Density = 200 \: kg \: m {}^{ - 3} [/tex]

All people who are asked to testify in a criminal case must first be issued a subpoena by law enforcement.


A. True
B. False

Answers

Answer:

Option B

Explanation:

All people who are asked to testify in a criminal case must first be issued a subpoena by law enforcement, is a "false statement" or option B. A subpoena is a request to appear in court which is usually given out by the attorneys who are a part of the case, the law enforcement does not give out subpoenas, so this is indeed a false statement.

Hope this helps.

Answer: B

Explanation:

what can a chemical reaction be concisely represented by

Answers

A chemical equation


4) Type only the NUMBER answer to the question below (no units). Your
answer should have 4 significant figures.
How many grams of N202 are present in 4.5 x 1024 molecules of N2O2

Answers

(4.5 x 10^24 molecules) x (60.013 g / 6.022 x 10^23) = 448 grams or 4.484 x 10^2 grams = Answer

Guys help me, for me this is so hard i can't search this. I Brainliest the Best Answer.​

Answers

Hope you could understand.

If you have any query, feel free to ask.

( multi choice) ( science)
What are the ways that oxygen enters our body?
A. nose
B. mouth
C. ears
D. eyes ​

Answers

Answer:

you can also get oxygen from the mouth but you get more from the nose so i would chose nose

it’s A and B you get it from both

Currently, the primary source of sulfur dioxide emissions into the atmosphere is Group of answer choices coal burning power plants. plastic manufacturing. gasoline-powered lawnmowers. diesel trucks.

Answers

From what we know we can confirm that currently, the primary source of sulfur dioxide of emissions into the atmosphere is coal and other fossil fuel burning in industry.

What are the consequences of Sulfur dioxide in the atmosphere?

From what we know, this compound has proved to be quite toxic for humans to breathe. Increased concentrations of this in the atmosphere lead to increased rates of lung disease among other health complications.

Therefore, we can confirm that the primary source of sulfur dioxide of emissions into the atmosphere is coal and other fossil fuel burning in industry.

To learn more about pollution visit:

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If you throw a ball into the air, the force of ________ makes the ball fall back toward Earth.

Answers

Gravity? Sorry if its wrong

In the balanced equation Cu + 2 HCl --> CuCl2 + H2, if you start with 0.15mol Cu and 0.38mol HCl, how many moles of HCl are left over (which means unused)?

Answers

This problem is providing a chemical reaction between 0.15 mol of copper and 0.38 mol of HCl and asks for the moles of HCl that are left over. At the end, the answer turns out to be 0.08 mol.

Uses of stoichiometry

In chemistry, we define stoichiometry as a tool allowing to calculate mole-mass or mole-mole relationships between different species involved in a chemical reactions.

In this case, for 0.15 mol of copper and 0.38 mol of HCl one can apply a mole ratio in order to calculate the moles of HCl consumed by the former, considering the 1:2 mole ratio between them:

[tex]0.15 molCu*\frac{2mol HCl}{1molCu} \\\\=0.30 mol HCl[/tex]

This means that if 0.30 moles of HCl react and 0.38 moles are available, there is a left over or unused moles of:

[tex]leftover=0.38mol-0.30mol\\\\leftover=0.08mol[/tex]

Learn more about stoichiometry: brainly.com/question/9743981

HELP PLEASE!!!!!! I will give 100 points!!!!!

S + 6 HNO3 --> H2SO4 + 6 NO2 + 2 H2O

In the above equation how many moles of H2SO4 can be made when 87 moles of HNO3 are consumed?

Answers

Answer:

what do you need help with .

Explanation:

?

Answer:

Based on stoichiometry HNO3 to H2O is 6:2

Use 9 grams to find the moles of HNO3

9 grams/63g/mol=0.143 moles of HNO3

HNO3:H2O

6:2

0.143*2/6=0.048

H2O moles is 0.048moles

Mass of water =0.048moles*18g/mol=0.864g

To the nearest tenth=0.9grams

( sorry if its not right)

At room temperature most elements are classified as.

Answers

I am assuming you are talking about their phase and in that case, they are mostly solid except for mercury and bromine.

Hope that helps!

Which metal in the fourth period is the least reactive? Explain your reasoning

Answers

Answer:

Krypton

Explanation:

It is a noble gas, so it isn't reactive since it already has 8 valence electrons.

UNIT 4: Name/Writing Chemical Compounds Worksheet
Name the following ionic compounds

Answers

CaO - Calcium oxideLi₂S - Lithium sulfideAlBr₃ - Aluminium bromideBe(OH)₂ - Beryllium hydroxide

What is Ionic compounds?

Ionic compound is defined as those which contains ion and are held together by the attractive forces among the oppositely charged ions.

The names of the ionic compounds is given above and is the most appropriate answer.

Read more about Ionic compounds here https://brainly.com/question/2687188

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