What type of pollution is pictured here?

When the equilibrium of a system shift to increase the total moles of gas in the system, when the pressure is decreased.

Equilibrium law states that when any external stress is applied on the equilibrium state of the reaction then reaction will shift towards that side where external stress decreases.

Relation between pressure and moles of gas is directly proportional to each other. So when pressure is decreased then to maintain the equilibrium total moles of the gas of the system will increases as a result of which pressure increases.

Hence, equilibrium shift to increase the total moles of gas in the system.

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Answer: to maximize the stress on the system

Explanation: i took the test

The required pressure of the gas is 546 mmHg.

Relation between the volume and pressure of gas is explained through the ideal gas equation PV = nRT, and for the question required equation is:

P₁V₁ = P₂V₂, where

P₁ & V₁ are the initial pressure and volume.

P₂ & V₂ are the final pressure and volume.

On putting values from the question to the equation, we get

P₂ = (780)(350) / (500) =

P₂ = 546 mmHg

Hence required pressure is 546 mmHg.

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Answer:

1. What makes a "fluorescent" highlighter marker so bright?

When light of a certain wavelength is directed at the molecule's chromophore, a photon is absorbed and excites an electron to a higher energy state. Fluorescent highlighter ink is unusually bright because it converts some of the incident ultraviolet light that is invisible to humans into visible light.

2. How does plasma make a campfire flame orange?

The de-excitation of plasma (charged gas) is not the source of the light given off by a campfire's flame. The incandescence of solid soot particles billowing up on an updraft of hot air is what creates the light seen as a flame.

3. Why are crystals rare?

The answer is twofold: erosion and mixed composition. Wind, rain, and water flow have a way of knocking and mixing around things here on earth

Answer:

1: When light of a certain wavelength is directed at the molecule's chromophore, a photon is absorbed and excites an electron to a higher energy state. Fluorescent highlighter ink is unusually bright because it converts some of the incident ultraviolet light that is invisible to humans into visible light.

2: The de-excitation of plasma (charged gas) is not the source of the light given off by a campfire's flame. The incandescence of solid soot particles billowing up on an updraft of hot air is what creates the light seen as a flame.

3: erosion and mixed composition. Wind, rain, and water flow have a way of knocking and mixing around things here on earth. This erosion causes big crystals such as a palm-sized amethyst to get knocked apart into little crystals.

Explanation:

is equal to the mass of the original elements

Answer:

5.60 Liters at STP

Explanation:

First you need the balanced reaction equation

2 H2 +  O2   ====>   2  H2O

4 g of oxygen ( O2 )  is   4/(15.999*2) moles of O2     (using periodic table)

  Twice the number of moles of H2O re produced   (from equation)

     at STP the volume of a mole of gas is 22.4 liter/ mole

       put all of this together  

         2 *   4 / (15.999*2) moles * 22.4 L/mole = 5.60 L

Answer:

Explanation:

lewis dot structure:

Carbon has 4 valence electrons and hydrogen has 1 electron. Therefore, in below given way, the lewis dot structure for H[tex]_2[/tex]CCCl[tex]_2[/tex] can be drawn.

These illustrations, commonly referred to as lewis structures and electron dot structures, show how electrons are distributed and grouped around atoms.

You must be aware of the total amount of valence electron cloud in order to create the Lewis structure. Based on the atom's group number inside the periodic table, it is possible to determine how many valence electrons are present in a certain atom. Carbon has 4 valence electrons and hydrogen has 1 electron. The lewis dot structure for  H[tex]_2[/tex]CCCl[tex]_2[/tex] is given below.

Therefore, in above given way, the lewis dot structure for H[tex]_2[/tex]CCCl[tex]_2[/tex] can be drawn.

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Answer:

J.J. Thomson

Explanation:

Answer:

D

Explanation:

took the test

Answer:

option D is the correct answer of this question.

When stress is applied to an equilibrium reaction then the system will change its concentration to shift to a new equilibrium position.

So, the correct option is D.

The stage at which the rate of formation of reaction is equal to rate of backward reaction in an reversible reaction is called equilibrium.

The reaction in such stage occur is called equilibrium reaction.

There are some factors which affects the equilibrium.

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Answer:

15M

Explanation:

To find molarity, you use the equation :

Molarity = [tex]\frac{moles of solute}{liters of a solution}[/tex]

So to find the molarity, you would do 90mols of the solute divided by 6 liters of the solvent which is 15M.

The chemical's IUPAC names of the given compound are propanal and acetone.

IUPAC is the international union of practical and applied chemistry. It set rules for standard naming of the compound.

Propanal, or propanaldehyde, is an aldehyde that has one double bond and one oxygen atom.

Acetone is a kind of ketone. Ketones have the functional group R2CO.

Thus, chemical's IUPAC names of the given compound are propanal and acetone.

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Answer:

Acid: HSO4-

Base: NH3

Conjugate Acid: NH4+

Conjugate Base: SO4-2

Explanation:

HSO4- gives a H+ to NH3 making NH4+ the conjugate acid.

Same can be said to the base.

The isomer of the molecule in the depicted image would be A.

Isomers are molecules with the same chemical formula but different arrangements of their component atoms. Isomers also have different properties.

The original molecule in the image has a triple bond with 4 carbon atoms. Thus, its isomers must also have a triple bond with 4 carbon atoms.

The only option with a triple bond and 4 carbon atoms in the image is option A.

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Answer:

b

Explanation:

is the dictionary definition of a word.

is the feeling or idea associated with a word.

Answer:

When liquid water reaches the freezing point, it expands. After placing a sealed glass container full of water into the freezer, we might expect it to freeze, expand, and either crack or shatter the glass.

Explanation:

According to Gay lussac's law

[tex]\\ \rm\Rrightarrow P\propto T[/tex]

But according to Boyles law

[tex]\\ \rm\Rrightarrow P\propto \dfrac{1}{V}[/tex]

If volume is decreased by 4 times then pressure is increased by 4times

A chemist needs 32.0 g of phenol, for an experiment. The number of moles of phenol is 0.340 mol.

The mole is a SI unit of measurement that is used to calculate the quantity of any substance.

Calculating the moles

[tex]\rm Number\;of \;moles= \dfrac{mass}{molar\;mass}\\\\\rm Number\;of \;moles= \dfrac{32.0}{94.11} = 0.340 moles[/tex]

The molar mass can be calculated by counting the molecules of the elements. Then multiply the molecules of each element with its molar mass and then add the total number, you'll get the molar mass of the compound.

Thus, the number of moles of phenol is 0.340 mol.

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Answer:

E. O, S, Se, Te

Look up atomic size charts, go to row 6

[tex]Molarity X \frac{0.762 mol}{05.576398 L} = Mass[/tex] is the of [tex]C_8H_1_8[/tex] is in 405,576.398 mL.

Molarity (M) is the amount of a substance in a certain volume of solution. Molarity is defined as the moles of a solute per litres of a solution. Molarity is also known as the molar concentration of a solution.

Given data:

Molar mass of  [tex]C_8H_1_8[/tex] = 0.762 mol

Volume of solution = 405,576.398 mL = 405,576.398 mL/1000 = 405.576398 L

Solution:

Step 1: Calculating  moles of [tex]C_8H_1_8[/tex]

• Molarity =[tex]\frac{\;Moles \;of \;solute}{\;Volume \;of \;solution \;in \;litre}[/tex]

• Putting the value in the given formula

• Moles of solute C8H18 = [tex]\frac{\;Mass}{\;Molar \;molar \;mass}[/tex]

• Moles of solute C8H18 = [tex]\frac{\;Mass}{0.762 mol}[/tex]

Now,

Molarity =[tex]\frac{\;Moles \;of \;solute}{\;Volume \;of \;solution \;in \;litre}[/tex]

Molarity =[tex]\frac{\frac{\;Mass}{0.762 mol}}{\;Volume \;of \;solution \;in \;litre}[/tex]

Molarity =[tex]\frac{\frac{\;Mass}{0.762 mol}}{405.576398 L}[/tex]

[tex]Molarity X \frac{0.762 mol}{05.576398 L} = Mass[/tex]

Hence, [tex]Molarity X \frac{0.762 mol}{05.576398 L} = Mass[/tex] is the of [tex]C_8H_1_8[/tex] is in 405,576.398 mL.

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Answer:

Refracting

Explanation:

Answer:

C

Explanation:

The powdered iron has a greater surface area than the single piece of metal, allowing reactions to be done faster.

It's NOT A because in the reaction Iron is a reactant NOT a catalyst

It's NOT B because it's completely irrelevant to the question

It's NOT D because it's also not relevant to the question at hand

The molar mass of the compound with 20 l volume of gas with mass of 10.0 g. is 160.51 M.

Molar mass of many compounds can be calculated by dividing the mass of the compound by the number of moles of the compound.

Calculating the moles

Convert Kelvin into Celsius

[tex]\rm PV = nRT\\1 atm. \times 20.0 \times = n \times 8.314 \times 0.15 \circ C\\n = 0.0623[/tex]

Calculating the molar mass

[tex]\rm Molar\;mass = \dfrac{mass}{number\;of\;moles} \\\\Molar\;mass = \dfrac{10.0 }{0.0623} = 160.51 M[/tex]

Thus, the  molar mass of the compound is 160.51 M.

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Answer:

187.407g

Explanation:

Moles of solute = Molarity × Liters of solution

Multiply 0.60 M by 1.50L:

0.60 mol/ 1L×1.50L=0.9 mol

To obtain the mass of solute, we will need to the molar mass of BaCl2, which is 208.23g/mol:

Finally, multiply the number of moles by208.23g /mol

0.9mol×208.23g/1mol =187.407g

Boom, you have a mass of:

187.407g

Answer:

No digestion occurs in the esophagus. After passage through the esophagus, the bolus will enter the stomach and undergo mechanical and chemical digestion. Mechanical digestion in the stomach occurs via peristaltic contractions of the smooth muscle from the fundus towards the contracted pylorus, termed propulsion.

Explanation:

i hope it's help

Answer:

No....see below

Explanation:

Well not quite.... that would be a solar eclipse....when the Earth shadows  the moon from the Sun is a lunar eclipse

Now

[tex]\\ \rm\Rrightarrow Q=mc\delta T[/tex]

[tex]\\ \rm\Rrightarrow Q=200(10)(0.21)[/tex]

[tex]\\ \rm\Rrightarrow Q=20(21)[/tex]

[tex]\\ \rm\Rrightarrow Q=420cal[/tex]

Answer:

AAAAA its A

Explanation:

Answer:

C.

Explanation:

The sound is perceived as louder if the amplitude increases, and softer if the amplitude decreases. ... As the amplitude of the sound wave increases, the intensity of the sound increases. Sounds with higher intensities are perceived to be louder. Relative sound intensities are often given in units named decibels (dB).

The correct statement about the amplitude of a wave is option C. Thus, the larger the amplitude, the more the energy that is carried by the wave.

Amplitude of a wave is a parameter describing the intensity of the wave. Amplitude of a transverse wave and sinusoidal waves are measured as the distance between from the central point of a crest to its top or the the distance from the central point of the trough in the line to its bottom part.

The amplitude of a wave is directly proportional to the frequency of the wave and the frequency in turn is directly proportional to the energy of the wave.

Therefore, The correct statement about the amplitude of a wave is option C. Thus, the larger the amplitude, the more the energy that is carried by the wave.

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Answer:

15.625 g of  a 500 gram sample of potassium-42 with 12.4 hours of Half -life is left after 62 hours.

The half-life is the time after which half of the initial quantity of a radioactive substance is left .

Given here,  

The half-life of K-42 = 12.4 hours  

The initial quantity of K-42 = 500 gm  

The final quantity after 62 hours = ?  

The number of half cycle

Thus the number of half life cycles in 62 hours is 5,

After 1 half life  

After 2 half lives  

After 3 half lives  

After 4 half lives    

After 5 half lives  

15.625 g of  a 500 gram sample of potassium-42 with 12.4 hours of Half -life is left after 62 hours.

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