how ferons is responsible for depletion of ozone layer?​

Answers

Answer 1
I think you mean freons? Freons are a type of CFCs which are chlorofluorocarbons. CFCs are known to being harmful to the ozone layer. They are responsible for the depletion of the ozone layer because of their reaction to the particles of the ozone layer.

Related Questions

What i

Chemistry:

Collect information regarding periodical development of fundamental

particles and structure of atom with different atomic models and display

then information Chart.

Answers

Answer:

Periodical development of fundamental particles and structure of atoms can be explained from different atomic models .

Explanation:

Periodical development of fundamental particles :

About 2600 years ago  an Indian sage called kanada proposed that all forms of matter are composed of very small particles called as Anu  and each Anu  is made up of smaller particles called Parmanu .

Later Greek philosopher Democritus called these atoms and according to him  atoms are indivisible and indestructible .

John Dalton's theory describes elements  in terms of atoms which he believed to be indivisible particles.

But Later John Dalton's postulate which suggests that atom  is indivisible  is disproved  by various experiments conducted by various scientists   :                                                                                                              

 1. Electron -  J.J Thomson discovered the electron while experimenting with cathode rays   in 1897.                                                                                              

2.  Proton - Proton was discovered by Gold stein in 1920.                              

3. Neutron was discoverer by James Chadwick   in 1932 by bombardment of alpha particle at beryllium .                                                                         Structure of atom :  

J.J Thomson atomic model : After the discovery of electrons ; he proposed his plum and pudding model  which shows that electrons are embedded throughout the positively charged material.Rutherford alpha particle scattering experiment : This experiment lead to the discovery of nucleus . According to this experiment  all the positive charge and most of the mass of atom  is concentrated  in a small core called nucleus . According to this model nucleus  is composed of neutrons and protons . Electrons are distributed around the nucleus and occupy most of the volume. Bohr atomic model : Bohr modified Rutherford atomic model of atom by suggesting that electrons move  in specific energy levels around nucleus.

Schrodinger's model of atom : This model  is most precise model and  is used  in present days . According to him  electrons are present in a particular region or space around the nucleus called as orbitals where probability of finding the electrons are more.          

An element has a half-life of 5.0 days. How many days would
pass before only 1/8th of the original amount of a sample of this
element remained?

Answers

Kinda don’t know you need to understand the sentence and find a way its operation

Define Isotopes with an example.​

Answers

Answer:

One or more number of species which have same number of atomic number but different mass number are called isotopes.

For example, [tex]^{1}_{1}H, ^{2}_{1}H, ^{3}_{1}H[/tex] are the isotopes of hydrogen.

So here, the atomic number of each of these isotopes is 1 and have different mass number, that is, 1, 2, 3.

question in the picture thank you sm!!!!​

Answers

Answer:

Explanation:

Reactants                                    Product

H = 2                                          H=2

Cl=2                                             Cl=2      

Zn=1                                            Zn=1    

Total number of atoms  5            Total number of atoms  5    

Explain the particles in Solutions of sodium sulfate alone and lead nitrate alone explain what happens to these particles of the two solutions are added together steered then allowed to sit for a couple minutes

Answers

Answer:

white precipitates of PbSO4 will appear

Explanation:

Now let us first consider the reaction equation;

Na2SO4(aq) + Pb(NO3)2(aq) ---->2NaNO3(aq) + PbSO4(s)

So, if i mix solutions of sodium sulfate and lead II nitrate, stir it and allow it to stand for a couple of minutes, i will begin to see the appearance of white precipitates of PbSO4.

This follows from the solubility rules. Sulphates are soluble in water except those of group II ions, Pb^2+ and silver I ion.

These are the last two questions on the sheet I need help with haha, help only the ones you can! (most helpful answer will get brainliest)

Answers

Answer:

the 7 question answer is c the 24  question answer is b

Explanation:

What is a scientific theory?
A theory is a summary of a scientific fact based on observation.
A theory is an explanation of why a scientific process occurs.
A theory is a proven scientific law.
A theory is a guess as to what will happen.

Answers

Answer:

Explanation:

I'm guessing B)

I'm 86.7% sure that might be right.

Answer:

A theory is a broad, natural explanation for a wide range of phenomena.

In the pie chart below, which of the following represents the amount of Earth's water located in the oceans?

A pie chart with part A representing 2%, part B representing .8%, part C representing .2% and part D representing 97%.

© 2011 FLVS

A only
A and B
C only
D only

Answers

Answer:

D. 97%

Explanation:

♪\(*^▽^*)/\(*^▽^*)/

Answer:

d

Explanation:

2H2 + O2- 2H20
Which conversion factors will you need to calculate the
mass of H2O that is made when 8 grams of H2 react?

Answers

Conversion factor : molar mass/molecular weight

Mass of H₂O produced = 72 g

Further explanation

Given

Reaction

2H2 + O2- 2H20

8 grams of H2

Required

Conversion factors

Solution

We can use the molar mass of the components and the mole ratio as conversion factors for the above equation

mol H₂ (MW = 2 g/mol) :

[tex]\tt mol=\dfrac{8}{2}=4~mol[/tex]

From the equation, mol ratio of H₂ : H₂O = 2 : 2, so mol H₂O = 4 mol

mass H₂O(MW = 18 g/mol) :

mass = mol x MW

mass = 4 x 18

mass = 72 g

There are two main isotopes of chlorine. 75% of chlorine atoms have a mass number of 35, while 25% have a mass number of 37. Use this information to work out the relative atomic mass of chlorine.

Answers

Answer:

Relative atomic mass = 35.5

Explanation:

Given data:

Abundance of Cl -35 = 75%

Abundance of Cl -25 = 25%

Average atomic mass = ?

Solution:  

Relative atomic mass = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass)  / 100

Relative atomic mass = (75×35)+(25×37) /100

Relative atomic mass =  2625 + 925 / 100

Relative atomic mass = 3550 / 100

Relative atomic mass = 35.5

What are some chemical properties of nickel?

Answers

Answer:

It is a good conductor of heat and electricity

Its melting point is 1453°C and its boiling point is 2913°C

It's bivalent and it has a valency of two

Are electrons shared with ionic or covalent bonds

Answers

They are shared with covalent bonds

*
Which of the following would NOT be found in an animal cell?
Chloroplasts
Endoplasmic Reticulum
Cell Membrane
Nucleus

Answers

Answer:

chloroplasts

Explanation:

chloroplasts are what make plants green, they are not included in animal cells

the answer is chloroplasts

1 How many moles of solute are in:
a 500 cm of solution, of concentration 2 moldm"?
b 2 litres of solution, of concentration 0.5 mol/dm?
Pls answer I will mark the person brainliest ​

Answers

Moles of solute for both a and b are the same = 1 mol

Further explanation

Given

a 500 cm³ of solution, of concentration 2 mol/dm³

b 2 litres of solution, of concentration 0.5 mol/dm³

Required

moles of solute

Solution

Molarity shows the number of moles of solute in every 1 liter of solution or mmol in each ml of solution

Can be formulated :

[tex]\large \boxed {\bold {M ~ = ~ \dfrac {n} {V}}}[/tex]

a.

V = 500 cm³ = 0.5 L

M = 2 mol/L

n=moles = M x V

n = 2 mol/L x 0.5 L

n = 1 mol

b.  

V = 2 L

M = 0.5 mol/L

n=moles = M x V

n = 0.5 mol/L x 2 L

n = 1 mol

The people in a coastal location are packing emergency supplies and evacuating their homes. Which of these statements best explains this behavior of people in the location?

They want to track the origin of a hurricane.
They plan to prevent the occurrence of a hurricane.
They want to escape from the fury of a hurricane.
They plan to watch a hurricane from a high location.

Answers

Answer:

They want to escape from the fury of a hurricane.

Explanation:

Your welcomeeeeeeeeeeeee

Answer:

They want to escape from the fury of the hurricane

Explanation:

None of the other choices made sense. They are packing to leave.

Have a splendid day!

how do stars generate energy??

Answers

Answer:

The energy source for all stars is nuclear fusion. Stars are made mostly of hydrogen and helium, which are packed so densely in a star that in the star's center the pressure is great enough to initiate nuclear fusion reactions. In a nuclear fusion reaction, the nuclei of two atoms combine to create a new atom.

The balanced equation for combustion in an acetylene torch is shown below: 2 upper C subscript 2 upper H subscript 2 plus 5 upper O subscript 2 right arrow 4 upper C upper o subscript 2 plus 2 upper H subscript 2 upper O. The acetylene tank contains 35.0 mol C2H2, and the oxygen tank contains 84.0 mol O2. How many moles of O2 are needed to react completely with 35.0 mol C2H2? mol O2

Answers

Answer:

87.5 mol of O2 is required to completely react with 35.0mol of C2H2

Explanation:

The equation is given as;

2C2H2 + 5O2 --> 4CO2  +  2H2O

The acetylene tank contains 35.0 mol C2H2, and the oxygen tank contains 84.0 mol O2.

From the balanced equatioon, the realtionship between the reactants is given as;

2 mol of C2H2 reacts with 5 mol of O2

How many mol of O2 would then react with C2H2?

2 mol C2H2 = 5 mol O2

35 mol C2H2 = x mol O2

Upon solving for x;

x = 35 * 5 / 2

x = 87.5 mol of O2

Answer:

87.5

Explanation:

Which of the following are evidence that a chemical reaction has occurred?

A. Two liquids are combined and a gas is released
B. A substance is added to water and dissolves
C. Two liquids are combined and a solid precipitate forms
D. A new substance is formed
E. A single reactant changes from a liquid to a solid

Answers

Answer:

A, B and C

Explanation:

The 7 rules of chemical change....

Gas Bubbles Appear. Gas bubbles appear after a chemical reaction has occurred and the mixture becomes saturated with gas. ...

Formation of a Precipitate. ...

Color Change. ...

Temperature Change. ...

Production of Light. ...

Volume Change. ...

Change in Smell or Taste.

what is base? what Is the sugar also a base?​

Answers

Answer:

base is also known as alkaline

n sugar is not a base

sulpher is a non metal​

Answers

Answer:

Sulphur is a non-metal because it's valency is 6 and it have many character of non-metal.

Iron (III) chloride reacts with potassium hydroxide to produce iron (III) hydroxide and
potassium chloride.

Answers

Answer:

The balanced chemical equation is :

FeCl3 + 3KOH → Fe(OH)3 + 3KCl

Which of the following industrial processes involves a voltaic cell rather than electrolysis?

coating forks and knives with silver ?

extracting sodium from sodium hydroxide ?

reinforcing the hull of a ship so that it resists corrosion ?

converting energy stored in chemical bonds to electricity ?

Answers

Answer: D. Converting energy stored in chemical bonds into electricity.

Explanation:

100% on edg 2021 quiz.

Answer:

D. converting energy stored in chemical bonds to electricity

Explanation:

Edge 2020

Question 2
Which of the following is a balanced chemical equation?
A
2 Al(OH)3 - Al2O3 + 3 H2O
B
2 Al2O3 + 3 H2O - 2 Al(OH)3
С
2 Al(OH)3 - Al2O3 + 3 H2O
D
Al(OH)3 + 3 H20 - AlO3

Answers

Answer:

C

Explanation:

For A, 2Al(OH)3 contains 6H on the left side of the equation but only has 3H on the right side of the equation, thus its not balanced

For B, there is 2(Al2), which is 4, on the left side of the equation but only 2Al on the right side of the equation, so it is not balanced.

For D, theres a total of 6 H on the left side of the equation as there is (OH)3 and 3H, but none of the right side, so its not balanced.

C is the correct answer as

on the left side of the equation:

2 Al(OH)3 has 2Al, 6O, and 6H

on the right side of the equation:

Al2O3 has 2Al and 3O

3 H20 has 3H and 6O

this makes a total of 2Al, 6H and 6O, which is equal to the number of each element in the left side, thus it is balanced and is the right answer.

In the future for these type of qns, you want to add up the number of each element on the left, then the ride, and see compare the numver of element they have. if the number of all the elements on both sides are the same, the equation is balanced.

Based on its position on the periodic table, which of the following elements is a nonmetal?

A. Potassium (K)
B. Vanadium (V)
C. Nickel (Ni)
D. Bromine (Br)

Answers

Answer:

D. Bromine (Br)

Explanation:

Based on its position on the periodic table Bromine is the only non-metal from the given choices of elements.

Potassium is an alkali-metal and it belongs to group 1 on the periodic table. Vanadium and Nickel are transition metals which belongs to the d-block on the periodic table. Bromine, Br is a halogen which belongs to group 7 on the periodic table. The group is a group of non-metals

Dr. Laude doesn’t care for fancy definitions of a mole. He prefers the idea that a mole is:

A) an amount of a substance you can hold in your hand.
B) the amount of a substance you can store in a shoebox.
C) the amount of a substance you can place on the head of a pin.
D) the amount of a substance you can see with a microscope.

Answers

Answer:

A

Explanation:

Dr. Laude  prefers the idea that a mole is an amount of a substance you can hold in your hand.

What is a mole?

Mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.

It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.

It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons .Molar mass has units of gram per mole . In case of molecules, where molar mass  in grams present in one mole  of atoms is its atomic mass.

Learn more about mole,here:

https://brainly.com/question/26416088

#SPJ2


What is the mid-ocean ridge? Two complete sentences.

Answers

Answer:

A mid-ocean ridge is an underwater mountain range, formed by plate tectonics.Mid-ocean ridges represent one of the most important geologic processes shaping the Earth

It’s a seafloor mountain cause by the movement tectonic plates. This is where seafloor spreading occurs

Which of the following words/phrases can be used to describe table salt (NaCl)?
Select one or more:
a.Compound
b.Element
c.Mixture
d.Pure substance

Answers

I think it is a compound

Which has more mass?

a
1 mole of Carbon
b
1 mole of Oxygen
c
1 mole of Chlorine
d
1 mole of Hydrogen

Answers

Answer:

Chlorine has more mass than the other elements.

Explanation:

We can find the mass of each element using the following equation:

[tex] m = \eta*A [/tex]

Where:

η: is the moles

A: is the standard atomic weight

a) For carbon, we have:

[tex] m_{C} = \eta*A = 1 mol*12.011 g/mol = 12.011 g [/tex]

b) For oxygen, we have:

[tex] m_{O} = 1 mol*15.999 g/mol = 15.999 g [/tex]

c) For chlorine, we have:

[tex] m_{Cl} = 1 mol*35.45 g/mol = 35.45 g [/tex]

d) And for For hydrogen, we have:

[tex] m_{H} = 1 mol*1.008 g/mol = 1.008 g [/tex]

Therefore, chlorine has more mass than the other elements.  

I hope it helps you!          

when does mass change?

Answers

Answer:

the mass of an does not change with speed but changes when we add or cut a part of it.

Explanation:

Answer:

weight

Explanation:

Help me please in science !! ( 10 points )

Answers

Answer: Nuclear

Explanation:

Nuclear energy generates power through fission, which involves splitting uranium atoms to produce energy. The heat released by fission is used to create steam that rotates turbine to generate electricity.

The energy produced by nuclear plants is carbon free but the products formed are radioactive and hence their transportation, storage, and disposal is a big problem. It can not be dumped like normal waste.

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