1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ICE Princess25 [194]
3 years ago
9

Which of the following is not a characteristic of electromagnetic waves

Chemistry
1 answer:
Mekhanik [1.2K]3 years ago
7 0

<u>Complete Question:</u>

Which of the following is not a characteristic of electromagnetic waves?

a. they can travel through a vacuum.

b. they can travel at various speeds through any one material.

c. they can be refracted.

d. they can be reflected.

<u>Correct Option:</u>

"They can travel at various speeds through any one material" is not a characteristic of electromagnetic waves.

<u>Explanation:</u>

It is a form of energy generated by interference from the oscillating magnetic and electric recorded. So we may conclude that it is created by moving electric charged particles through the vacuum so matter. This is a wave in which the two vectors vibrate each other perpendicularly and in the direction of the wave. Electromagnetic waves which involve gamma-rays, x-rays, ultraviolet rays, infrared-rays, microwaves and radio-waves can be featured by:

  • They may pass through the vacuum.
  • They are allowed to move through the matter and are reflectable.
  • They can pass through all of the material at the same pace. This means there is still constant speed of light, which is, they can be refracted.
You might be interested in
Why does the border between light and dark on the Moon change location?
Stella [2.4K]
The moon goes through it’s different phases so during these it changes it’s form from either a full moon to a waning crescent (the smallest of them all). if i’m wrong i’m sorry
3 0
3 years ago
Read 2 more answers
Select the statement which is not true about the chair conformation of cyclohexame.
maks197457 [2]
Tha answer is choice B
5 0
3 years ago
Calculate the molality of 2.0 M MgCl2 solution. The density of the solution is 1.127 g/mL. (The molar mass of MgCl2 = 95.211 g/m
Elan Coil [88]

The answer is 2.135 mol/Kg

Given that molarity is 2M, that is, 2 moles in 1 liter of solution.

Density of solution is 1.127 g/ml

Volume of solution is 1L or 1000 ml

mass of solution (m) = density × volume

m₁ = density × volume = 1.127 × 1000 = 1127 g

mass of solute, m₂ = number of moles × molar mass

m₂ = 2 × 95.211

m₂ = 190.422 g

mass of solvent = m₁ - m₂

= 1127 - 190.422

= 936.578 g

= 0.9366 Kg

molality = number of moles of solute / mass of solvent (in kg)

= 2 / 0.9366

= 2.135 mol/Kg

8 0
3 years ago
Read 2 more answers
In each reaction box place the best reagent and conditions from the list below benzene 3 boxes
den301095 [7]

Answer : The correct answer is 1) AlCl₃ - CH₃Cl 2) HNO₃ -H₂SO₄ at room temperature 3) Fuming HNO₃ -H₂SO₄ at 90-100 ⁰ C heat .

I think this reaction is forming 2,4,6- trinitrotoluene from benzene, since the product is not mentioned. Following are the steps to convert Benzene to 2,4,6 trinitrotoluene .

Step 1: Conversion of Benzene to Toluene .

Benzene can be converted to toluene by Friedel Craft Alkylation of benzene . In this reaction reagent AlCl₃ and Ch3Cl is used . Electrophile CH³⁺ is produced which attached on carbon of benzene and formation of Toluene and HCl occur.

Benzene     \frac{AlCl3}{Ch3Cl}>   Toulene + HCl

Step 2 : Conversion of Toluene to dinitrotoluene.

Dinitritoluene is prepared from toluene by Nitration . This reaction uses Electrophilic substitution mechanism . The reagents used are HNO₃ and H₂SO₄ at room temperature . These reagents produces NO₂⁺ ( nitronium ion ), a electrophile which attacks on C2 and C4 Carbon atoms of Toluene.

Toluene Tolune   \frac{HNO3 -H2SO4}{30-40 degree C} ->  2,4- dinitrotoluene

Step 3) Conversion of Dinitro toluene to trinitrotoluene.

This reaction is extended nitration of toluene . Further nitration is done in extreme condition . The temperature of reaction is increased to 90- 100 ⁰ C . Due to which there is more production of NO²⁺ ion occurs from HNO₃ -H₂SO₄ and they attack on C6 carbon atom of dinitrotoluene which forms 2,4,6- trinitrotoluene.

Dinitrotoluene 2,4 -dinitrotoluene   \frac{fuming HNO3-H2So4}{90-100 C} ->  2,4,6-trinitrotoluene.

So over all reaction uses three reagents in order :

Benzene  \frac{AlCl3}{CH3Cl}  -> Toluene  \frac{HNO3-H2So4}{room temp}  -> 2,4-dinitrotoluene  \frac{Fuming HNO3 -H2SO4}{Heating at 90-100 C}  -> 2,4,6-trinitrotoluene .

3 0
4 years ago
Read 2 more answers
What is the nature of the Se-Cl bond in a molecule of selenium chloride (SeCl2) if the electronegativity value of selenium is 2.
marta [7]
The nature of the Se-Cl bond in a molecule of selenium chloride (SeCl2) if the electronegativity value of selenium is 2.55 and that of chlorine is 3.16 will be MODERATELY POLAR COVALENT. Because Both of them have a very little difference in their electronegativity.
7 0
3 years ago
Read 2 more answers
Other questions:
  • Which of these is not a monatomic element
    6·2 answers
  • Determine how many moles are present in 523.46g of glucose, c6h12o6
    13·1 answer
  • What type of a reaction occurs when a sodium hydroxide solution is mixed with an acetic acid solution? what type of a reaction o
    11·1 answer
  • Sodium (Na) has 11 protons and 12 neutrons. Which of the following is the most likely atomic weight of sodium?
    12·1 answer
  • How many moles are in 2.8 g of Mg?
    9·1 answer
  • What is true of boric acid?<br> PLEASE HELP
    15·1 answer
  • This is Science
    11·2 answers
  • A Student notes that a chunk of wood is much lighter after it has been burned. He concludes that burning a substance destroyed s
    8·1 answer
  • When salt dissolves completely into water, which term is used to describe the water?
    8·2 answers
  • An engineer examining the oxidation of SO₂ in the manufacture of sulfuric acid determines that Kc = 1.7x10⁸ at 600. K:2SO₂(g) +
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!