What is the velocity of a plane that traveled 2,800 miles from New York to California in 5.0 hours?

Answer:

a)

[tex]K_2=1.3x10^{2}atm^{-1/2}[/tex]

b)

[tex]PCl_5\rightarrow PCl_3+Cl_2[/tex]

[tex][PCl_5]=0.0375M[/tex]

Explanation:

Hello!

a) In this case, since we can see that the second reaction is equal to the half of the first reaction, we can relate the equilibrium constants as shown below:

[tex]K_2=K_1^{1/2}[/tex]

Thus, by plugging in the the equilibrium constant of the first reaction we obtain:

[tex]K_2=(1.6x10^4atm^{-1})^{1/2}\\\\K_2=1.3x10^{2}atm^{-1/2}[/tex]

b) In this case, for the described reaction we can write:

[tex]PCl_5\rightarrow PCl_3+Cl_2[/tex]

Thus, the corresponding equilibrium expression is:

[tex]K=\frac{[PCl_3][Cl_2]}{[PCl_5]}[/tex]

In such a way, since we know the equilibrium constant and the concentrations of PCl3 and Cl2 at equilibrium, we can compute the concentration of PCl5 at equilibrium as follows:

[tex][PCl_5]=\frac{[PCl_3][Cl_2]}{K}\\[/tex]

[tex][PCl_5]=\frac{\frac{0.20mol}{4L} *\frac{0.12mol}{4L} }{0.04}[/tex]

[tex][PCl_5]=0.0375M[/tex]

Best regards!

Answer:

pharynx > larynx>trachea> bronchi>alveoli   (so B)

Explanation:

nasal cavities (or oral cavity) > pharynx > trachea > primary bronchi (right & left) > secondary bronchi > tertiary bronchi > bronchioles > alveoli (site of gas exchange)

Answer:

yes I would

Explanation:

but I would like to advice you to add more info about project and be precise

Answer:

Hella false

Explanation:

big cap.

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Answer:

M = 1.04 M

Explanation:

Given data:

Molarity of solution = ?

Mass of HCl = 6.27 g

Volume of solution = 163 mL (163 mL× 1L /1000 mL = 0.163 L)

Solution:

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / L of solution

Number of moles of HCl:

Number of moles = mass/molar mass

Number of moles = 6.27 g / 36.5 g/mol

Number of moles = 0.17 mol

Molarity:

M = 0.17 mol/ 0.163 L

M = 1.04 M

Answer:

4.6 M HCI

Explanation:

on edge

Answer:

option B is a right answer

Explanation:

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and as thanks for my answer

Answer: 1.4666667e+14

Explanation:

The rate constant of a reaction : 8.3 x 10⁻⁴

Given

rate = 1 x 10⁻² (mol/L)/s, [A] is 2 M,  [B] is 3 M, m = 2, and n = 1

Required

the rate constant

Solution

For aA + bB ⇒ C + D

Reaction rate can be formulated:

[tex]\large{\boxed{\boxed{\bold{r~=~k.[A]^a[B]^b}}}[/tex]

the rate constant : k =

[tex]\tt k=\dfrac{rate}{[A]^m[B]^n}\\\\k=\dfrac{1.10^{-2}}{2^2\times 3^1}\\\\k=8.3\times 10^{-4}[/tex]

Answer:

8.3x10^10-4

Explanation:

a p e x

Answer:

An asexually reproducing organism would have the best chance of repopulating the world.

Explanation:

Sexual reproduction is a method of reproduction that involves two parents and the formation and subsequent fusion of male and female gametes during fertilization. On the other hand, In asexual reproduction, only one parent is involved and produces offspring by making copies of itself through various methods such as binary fusion, budding and vegetatively.

In a case of a catastrophic event that wiped out almost all organisms, an organism that reproduces asexually have a greater chance of repopulating the world because of the following advantages in reproducing asexually:

1. Only one parent is needed, therefore reproduction is easier.

2. It isaves time and energy. Since almost all organisms have been wiped out, there is a lesser likelihood of finding a compatible mate, so reproducing asexually will give the organism a better chance.

3. It occurs at a very fast rate; much faster than sexual reproduction

4. The population can increase very quickly and colonization of new habitats is much easier.

All these advantages will give the esexually reproducig organism a fairer chance to repopulate the world.

Answer:

A.True

Explanation:

Hope it's answered you plz mark as Brainlist

Heat would be required  : 1,670 J

Given

mass of H₂O=5 g

Required

Heat to melt

Solution

The heat to change the phase can be formulated :

Q = m.Lf (melting/freezing)

Lf=latent heat of fusion

The heat of fusion for water at 0 °C : 334 J/g

Input given values in formula :

[tex]\tt Q=5\times 334=\boxed{\bold{1,670~J}}[/tex]

Answer:

You have to put equator in middle, trade winds on which ever side they are trading the items on, probaly north, and westerlies west, and jet streams around blue at the bottom, red at top and green in the middle.

Explanation:

I cant really explain it right because I don't know how to put the picture. I mean paste the picture on here

CAN YOU TELL ME HOW TO PUT PICTURE

Explanation:

Boron is a non metallic element and the only non-metal of the group 13 of the periodic table the elements. Boron is electron-deficient, possessing a vacant p-orbital. ... It reacts with metals to form borides. At standard temperatures boron is a poor electrical conductor but is a good conductor at high temperatures

Answer:

2KClO₃  →  2KCl  +   3O₂

Explanation:

The unbalanced expression is given as:

      KClO₃  →  KCl  +   O₂

The reaction equation above is unbalanced and we need to choose between the numbers 2,3,4 and 5 to finally the correct expression that will obey the law of conservation of mass.

       aKClO₃  →  bKCl  +   cO₂

Let a, b and c be the numbers that will balance the expression;

Conserving K;

         a  = b

Conserving Cl;

          a = b

 Conserving O;

           3a  = 2c

let a = 1, b  = 1  and c  = [tex]\frac{3}{2}[/tex] multiply through by 2;

     a  = 2, b  = 2 and c  = 3

So, the balance expression insert;

                      2KClO₃  →  2KCl  +   3O₂

Answer:

Chemistry can be applicable in many aspects which are

i) At school, through getting knowledge you can assess different aspect of chemistry, eg production of Chemicals.

ii) At hospital, also chemistry can be applicable in hospital because most of medicine and other materials are made up from chemistry application.

iii) Agriculture, through agricultural materials it simply because you can get more efficient through planted by using manures and fertilizer which are made up from chemistry application.

Answer:

the correct answer is A, Hg22+ on edge 2020

Explanation:

i took the review

The only cation that can form an ionic bond with an anion in the list is Hg22+.

The term "anion" refers to a negatively charged ion. An ionic bond is a kind of bond that is formed between an anion and a cation. As a result, ionic compounds are actually an ion pair.

If we look at the options closely, the only cation that can form an ionic bond with an anion in the list is Hg22+.

Learn more about ionic bond: https://brainly.com/question/25671575

Answer:

A catalyst is a substance that can be added to a reaction to increase the reaction rate without getting consumed in the process. Catalysts typically speed up a reaction by reducing the activation energy or changing the reaction mechanism.

Explanation:

Answer:

Lithium is reduesednas it gains electrons gold

Answer:

Look at Lithium on the Periodic Table, look at the amount of electrons. When Lithium and Gold are together, Lithium loses while Gold(Au) gains.

Answer & Explanation:

Crest is a point in the cycle where maximum or peak amplitude exists. In another way, it is a point on the positive side of a wave where maximum amplitude exits. Trough is a point in the cycle where minimum amplitude exists.

Crest: points A and E

Trough: points C and J

Wavelength is the distance between two crests or two troughs. One example is distance between points A and E.

Frequency is 3 because there are 3 oscillations in 1 second (follow the line from beginning to point D, then D to G, the G to end).

I asked that question on my brainly account to answer your question so the people that answerd my question said this is right I HOPE IT IS!!

1. The highest point or crest of a wave is called a crest, and the lowest point or valley is called a trough.

2. The wavelength of a wave is the distance between its two successive crests or troughs.

3. The frequency of a wave is the number of complete cycles (peak or trough) that occur in a unit time.

1. The highest point or crest of a wave is called a crest, and the lowest point or valley is called a trough. On the other hand, in a transverse wave, the peak and trough will be represented by the places of highest displacement above and lowest displacement below the equilibrium position, respectively.

2. The wavelength of a wave is the distance between its two successive crests or troughs. However, wavelength can be determined by comparing any two locations that are separated by a full circle, such as two successive crests or troughs.

3. The frequency of a wave is the number of complete cycles (peak or trough) that occur in a unit time. If the waves in the diagram are visible within one second, then the frequency will be determined by how many complete cycles were visible within that time.

Learn more about Wavelength, here:

https://brainly.com/question/31143857

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Answer:

1. Pollution caused the bark to become darker.

2. The light-colored peppered moth had a higher chance of survival

3. The dark-colored peppered moth had a higher chance of survival

4. During the Industrial Revolution, the barks of trees got darks, causing the moths to be seen easily on a dark background. Now predators were more likely to eat the lighter cloured moths as they were easier to find. Since fewer light-colored moths were surviving, there was a smaller likelihood of light moths surviving long enough to reproduce. Since there were fewer light-colored moths, the dark-colored moths had less competition and were able to reproduce quickly.

5. Sunny, warm place: I live in a place with lots of light and sunshine, so it would be easier for light moths to blend in with their environment long enough to reproduce and thrive.

Dark, rainy Place: I live in a place with little light and sunshine, so it would be easier for dark moths to blend in with their environment long enough to reproduce and thrive.

Explanation:

Periodic table is divided into three metals, non metals and metalloids. The metals are kept on the left side of the periodic table. Gold is a metal which exist in d block.

Metals are those elements which is hard, conduct electricity, ductile, lustrous and malleable.

The properties of gold are:

1.Gold have free electrons that's why they can conduct electricity

2. Since atoms in Gold are very closely packed in a definite crystal so gold is solid. It is not brittle that is it can not be broken down easily

3. Gold does not react with water easily.

4.Gold is denser than water hence it sink in water.

Gold is a transition element. Gold is found in d block of periodic table. Its symbol is Au.

Therefore, Gold is a metal which exist in d block.

Learn more about the metals, here:

https://brainly.com/question/27859211

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Answer:

c. A flat board tilted at an angle

Explanation:

form the looks of it, and i dont wanna sound like a flat earther her, cuz im not '-', but the best option here would be the flat board at an angle becasue the earth is tilted and isnt even like it said in the prompt.

Hope this helped and idrc about brainliest :)

Answer:

ca you attach these two pdf ?? or provide the link to this document

Answer:

it is 7

Explanation:

dogs are 7 HOPE THIS HELPED kidding i don get the question

Explanation:

DON"T EAT MY DOG OR I"LL EAT YOU

Answer:

for example the company has been in the United kingdom for women who have a lot to say it is not the only one that has the best of

Explanation:

get a little bit more of the year and

Answer:

for example the company has been in the United kingdom for women who have a lot to say it is not the only one that has the best of

Explanation:

Answer:52M

Explanation:

use S= 1000w/ MV

Here, s= molarity

w= the amount of NaCl

M= the atomic mass of NaCl

V= the volume of solution

Answer:

To balance a reaction, the amount of reactants must be equal to the amount of products, as stated by the Law of Conservation of Matter. It may help you to keep track of  the number of each element in a list as you try to balance. It's not able to be balanced.

Answer:

2,1,1,1

Explanation:

Hope this helped!

Answer:

C). Ball B transfers energy to Ball A

Explanation:

The motion of ball A is a because of the energy it acquires.

Ball A initially due to its position posses potential energy due to its position.

The moving ball B has kinetic energy due to the motion of this ball.

Answer:

c

Explanation: