Which of these is not a cycle studied by scientists?
O carbon
o hydrogen
O
rock
O
water

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:

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

-TheUnknownScientist 72

Answer:

D. they exchanged electrons

Answer:

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

Explanation:

Answer:

3.09 moles C3H8 8.22 moles C3H8 1.03moles C3H8 6.58moles C3H8 9.73moles C3H3

One mole of every substance contains 6.02×10²³ atoms. The no.of moles of C₃H₈ containing 4.95×10²⁴ hydrogen atoms is 1.02 moles.

A substance which contains 6.02×10²³ atoms is called one mole of that substance.  C₃H₈ contains 8 hydrogens. The atomic mass of hydrogen is 1.008 g.

The number of hydrogen atoms in one mole of C₃H₈ = 1.008× 6.02×10²³

= 4.85×10²⁴  hydrogen atoms.

Thus the no.of moles of C₃H₈ that contains 4.95×10²⁴ hydrogen atoms is calculated as follows:

(4.95×10²⁴× 1)/4.85×10²⁴ = 1.02 moles.

Therefore, 1.02 moles of C₃H₈ contains 4.95×10²⁴ hydrogen atoms.

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The molarity of the solution is 2.5 M

From the question, we are to determine the molarity of the solution

Using the formula,

[tex]Molarity = \frac{Number\ of\ moles}{Volume}[/tex]

From the given information

Number of moles = 2.5 moles

Volume = 1.0 L

Then,

[tex]Molarity = \frac{2.5}{1.0}[/tex]

Molarity = 2.5 M

Hence, the molarity of the solution is 2.5 M

Here is the complete question:

What is the molarity of 2.5 mol KCL in 1.0 L of solution

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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:

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!!!

Explanation:

I hope you benefit from this

This is the correct coefficient...

Answer: the answer is b

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

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

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:

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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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:

Ca+Fe(No3)2 —> Fe+Ca(No3)2

Explanation:

This reaction is already balanced, you can tell because if you add up all the numbers that are on each side you get the same number. (3+2=2+3)

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:

This is a synthesis reaction or a combination reaction

Answer:

lone pair of electrons form covalent bonds

Explanation:

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:

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

Explanation:

Answer:

The answer is 16 as the coefficient

Explanation:

I hope this helps

Answer:

D it's because we hot same question in my module and my teacher said I'm right

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:

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:

135

Explanation:

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

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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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:

i hope the answer is 12.0