again could someone help me on this?

Answer: the answer is b

Explanation: the formation of bonds releases energy and the breaking of bonds always involves an absorption of energy

Answer:

1) temperature,

2) plant, physical, cracks, grow

3) freeze-thaw, physical

4) rain, chemical, acid rain, fossil

Explanation:

I'm not too sure if all of these are correct, but I hope this helps

Answer:

Wind, ocean currents, waves

Explanation:

The plastic bottle travelled this much distance due to the following factors:

a) Wind

b) Ocean currents

c) Waves

Answer:

it would be the second option. It responds to stimuli to help protect an organism and maintain structure

Answer:

it is the second one

Explanation:

i took the test

Answer:

I’m guessing that you mean 4.95x 10^22,

3074.31 moles

Explanation:

(4.95x10^22) grams x (1) mole (6.02x10^23) grams

You cancel you the grams and then you have solved it for moles

Answer:

This is a synthesis reaction or a combination reaction

With the earth's atmosphere at approximately 78% nitrogen and 21% oxygen, we have that the mass in grams of oxygen is mathematically given as

Mass of O2=2.74.7g

Question Parameters:

Earth's atmosphere is approximately 78% nitrogen and 21% oxygen.

Generally, the equation for the ideal gas  is mathematically given as

PV=nRT

Therefore

n=PV/RT

n=1*1000L/0,0821*298k

n=40.87mol

In conclusion

Where mole of O is 8.58

Therefore

Mass of O2=8.58*32

Mass of O2=2.74.7g

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Answer: 275 grams

Explanation:

The mass of is K2CrO7 in the 250 ml of solution is mathematically given as

x=1.25mg of K2CrO7.

Hence, 250 ml of the solution will contain 1.25mg of K2CrO7

Question Parameters:

The total of potassium dichromate are there in a 250 mL bottle filled with 5 ppm solution

Generally the mass of k2CrO7  is mathematically given as

[tex]x=\frac{5mg of k2CrO7  *250ml of solution}{1000ml of solution}[/tex]

x=1.25mg of K2CrO7

Therefore,

250 ml of the solution will contain 1.25mg of K2CrO7

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Answer:

wind energy

Explanation:

Energy resource that has the advantage of producing clean energy that is less harmful to the environment is Modern wind mills.

A windmill is a machine structure that helps to convert wind power into rotational energy using wings called sails or blades, by tradition specifically to mill grain, but the term has also been extended to encompass windpumps, wind turbines, and other applications, in some parts of the English-speaking world.

Wind is a form of solar energy caused by a combination of three concurrent events:

The sun unevenly heating the atmosphere

Irregularities of the earth's surface

The rotation of the earth.

Given, options for Energy resource that has the advantage of producing clean energy that is less harmful are-

-Coal being extracted from the ground.

-Modern wind mills.

-A man filling a car with gasoline

Therefore, Energy resource that has the advantage of producing clean energy that is less harmful to the environment is Modern wind mills.

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#SPJ7

Answer:

Because burning copper in air won't oxidize it you need to leave it in contact with air only

Explanation:

Answer:

kr means krypton

krypton atomic number is 36

electronic configuration: 1S² 2S² 2P⁶ 3S² 3P⁶3d¹⁰ 4S² 4P⁶

Explanation:

in other forms:

[Ar] 3d¹⁰ 4S²4P⁶

Explanation:

I hope you benefit from this

This is the correct coefficient...

Answer:

Nitrogen

Explanation:

The Kjeldahl method (the test for routinely determining the crude protein content of foods) determines a food's total nitrogen content, which is then used to estimate the crude protein content using a conversion factor.

I hope this helps you

:)

Answer: im pretty sure its Nitrogen!

hopes this helps ya out! have a day full of killing demons and slaying the dark lord..lol

Answer:

[tex] \frac{ {a}^{2} }{ {b}^{2} \times c \times {e}^{7} } [/tex]

Hope it helps you.......

The statement Venus has an average surface temperature higher than that of Mercury is true, because of the presence of the high amount of carbon dioxide.

Every body has outer surface and inner surface, so if we talk about the temperature of outer surface then we will use the word surface temperature.

As we know that carbon dioxide is a green house gas, it means this gas increase the temperature by trapping the heat content. In the Venus atmosphere high amount of carbon dioxide is present and this atmosphere traps the heat coming from the sun and have a higher surface temperature as compare to Mercury. Because in Mercury atmosphere is absent.

Hence, given statement is true.

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Answer:

i hope the answer is 12.0

At constant conditions, 1000 mL of the chlorine gas will be required to yield 1.00 L of dichlorine trioxide.

From the equation of the reaction:

2Cl2(g)+3O2(g)→2Cl2O3(g)

Mole ratio of Cl2O3 and Cl2 = 1:1

At standard conditions, 1 mole of gas equals 22.4 L volume.

1.00 L of Cl2O3 would, therefore, be:

                1 x 1/24 = 0.04 moles

Equivalent mole of Cl2 = 0.04 moles.

Thus, 1.00 L or 1000 mL of Cl2 will also be required.

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Answer:

The electronegativity of an atom indicates the ability of an atom to attract shared electrons in a covalent bond. The higher the value of the electronegativity, the more strongly that element attracts the shared electrons.

Hope this helps!!!

Answer:

135

Explanation:

Work can be calculated with the equation: Work = Force × Distance

Answer:

0.637 V

Explanation:

The balanced redox reaction is:

Here Zn undergoes oxidation by loss of electrons, thus act as anode. Lead undergoes reduction by gain of electrons and thus act as cathode.

Where both are standard reduction potentials.

= -0.763

= -0.126

The standard emf of a cell is 0.637 V

Answer:

There are five main types of chemical reactions. These are synthesis, decomposition, combustion, single replacement and double replacement.

Explanation:

Iodized salt contains potassium iodate, potassium iodide, sodium iodate, and sodium iodide.

Salt is a very important ingredient used in cooking across the world. Salt is commonly obtained from sea water. Salt can also be manufactured artificially. Large deposits of salts occur in some parts of the world.

The ingredients that are contained in iodized salt include; potassium iodate, potassium iodide, sodium iodate, and sodium iodide. The species that contain iodine supply the iodine required by the thyroid gland.

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Taking into account the definition of dilution, the initial volume of the 1 M HNO₃ solution is 25 mL.

When it is desired to prepare a less concentrated solution from a more concentrated one, it is called dilution.

Dilution is the process of reducing the concentration of solute in solution, which is accomplished by simply adding more solvent to the solution at the same amount of solute.

In a dilution the amount of solute does not change, but as more solvent is added, the concentration of the solute decreases, as the volume (and weight) of the solution increases.

A dilution is mathematically expressed as:

Ci×Vi = Cf×Vf

where

Assuming that you want to know the volume of HNO₃ required to produce the dilution, you know:

Replacing in the definition of dilution:

1 M× Vi= 0.250 M× 100 mL

Solving:

Vi= (0.250 M× 100 mL)÷ 1 M

Vi= 25 mL

In summary, the initial volume of the 1 M HNO₃ solution is 25 mL.

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Answer:

lone pair of electrons form covalent bonds

Explanation:

Answer:

52

Explanation:

Mass number is the sum total of protons and neutrons in an element

Therefore, Mass number = protons + neutrons

Mass number = 23 + 29

Mass number = 52

Answer:

The formula of Tin (IV) Thiosulfate is Sn(S₂O₃)₂

-TheUnknownScientist 72

Answer:

Strong winds that blow for a long time over a great distance.

Explanation:

Generally, the biggest and most powerful wind-generated waves are produced by strong storms that blow for a sustained period over a large area. Huge and big waves, or swells, can travel over long distances. The size of the wave depends on wind speed, wind duration, and the area over which the wind is blowing. If The speed of the wind is more, it stays for along time and it covers a larger distance then the waves produced will be very powerful and large.

Answer:

the atom structure in model A has more atoms and they are all the same type of atom while model B has less atoms and they are different types of atoms.

Explanation:

Answer:

D. they exchanged electrons