The table shows the densities of Earth's layers.


Which of these is most likely the density of Earth's mantle?

1.5-2.2 g/cm3

3.4-5.6 g/cm3

10.6-12.4 g/cm3

13.5-15.2 g/cm3

The component that would be the solvent from the graph would be nitrogen.

From the graph, nitrogen takes up 78%, oxygen had 21%, while the remaining gases take the remaining 1%.

A solvent is a substance or the component of a solution that has the capacity to dissolve other substances

In a mixture consisting of 2 or more substances, the substance with the highest volume usually acts as the solvent.

In this case, nitrogen holds the highest volume of all the gases in the graph. Thus, it can be considered as the solvent while the remaining gases are the solutes.  

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Answer:

soilds - close together  arranged in a regular way

liquids - close together  arranged in a random way

gases - far apart  arranged in a random way

Explanation:

Answer:

The true statement concerning visible light and electromagnetic radiation is considered to be - d. Visible light is a small portion of the electromagnetic spectrum.

The electromagnetic spectrum is the range of frequencies of electromagnetic waves or radiations. This spectrum also gives an idea about the wavelengths of electromagnetic radiations. The part of the spectrum on their higher to lower energy or frequency range from  Hz to  Hz are:

gamma rays

X-rays

ultraviolet radiation

visible light

infrared radiation

radio waves.

The visible light is the very small part of the electromagnetic spectrum that ranges from the to, Visible light is the light that the human eye can see.

Thus, the correct answer is- option d.

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Explanation:

i did this

Answer:

strongest magenetic field in the solar system

Explanation:

Answer:

Away from the sun

Explanation:

winter

In the Northern Hemisphere, winter generally begins on December 21 or 22. This is the winter solstice, the day of the year with the shortest period of daylight. Summer begins on June 20 or 21, the summer solstice, which has the most daylight of any day in the year.

Answer:

igneous rock is the correct answer

The phrase which best describes nuclear fusion is: A. the process by which small nuclei combine into a larger nucleus.

A nuclear reaction can be defined as a type of chemical reaction in which the nucleus of an atom of a radioactive chemical element is transformed by either being joined (fusion) or split (fission) with the nucleus of another atom of a radioactive chemical element and accompanied by a release of energy.

Generally, there are two (2) main types of nuclear reaction and these include:

In conclusion, nuclear fusion is best described as the process by which small nuclei combine into a larger nucleus, accompanied by a release of energy.

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Answer:

a

Explanation:

B, D in the diagram represents the transition from liquid to gas. A phase diagram is a sort of figure that is used in physical chemistry.

A phase diagram is a sort of figure that is used in physical the field of chemistry engineering, mineralogy, as well as materials science to demonstrate the conditions (pressure, temperatures, volume, etc.) that exist when thermodynamically different phases (such solid, liquid, or gaseous states) arise and coexist at equilibrium.

Lines of equilibrium, also known as phase boundaries, or circumstances under which different phases may exist at equilibrium, are typical elements of a phase diagram. Phase changes take place along equilibration lines. Despite their frequent occurrence, metastable phases are not equilibrium phases, hence they are not depicted on phase diagrams. B, D  in the diagram represents the transition from liquid to gas.

Therefore, B, D in the diagram represents the transition from liquid to gas.

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What will happen in a case there  is different number of electrons compare to  protons is D: The particle is considered an ion.

Therefore, an ion can be charged positively and it can be charged negatively

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Answer:

The ping-pong ball will fly up with the air from the hair dryer until it reaches a point of balance – this is where the force of gravity (which pushes the ping-pong ball down) is equal to the force of the air (which is pushing the ping-pong ball up) hop it helps:)

Answer:

Both physical and chemical changes

The heat produced by hydrolysis of 65 kg of ATP is -6.8 kJ.

Let's consider the thermochemical equation for the hydrolysis of ATP.

ATP + H₂O ⇒ ADP + Pi   ΔG = -57 kJ/mol

We will convert 65 kg of ATP to moles using its molecular weight (507.18 g/mol).

[tex]65 \times 10^{3} g \times \frac{1mol}{507.18g} = 1.2 \times 10^{2} mol[/tex]

57 kJ of heat are released by the hydrolysis of 1 mole of ATP. The heat released by the hydrolysis of 1.2 × 10² moles of ATP is:

[tex]1.2 \times 10^{2} mol \times \frac{(-57kJ)}{1mol} = -6.8 \times 10^{3} J = -6.8 kJ[/tex]

-6.8 kJ is the heat produced by hydrolysis of 65 kg of ATP.

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Answer:

35

Explanation:

The atomic number for bromine is 35, which means it has 35 protons in its atomic nuclei. A neutral bromine atom would also have 35 electrons. In order for a bromine atom to become a

1

−

bromide ion, it would have to gain an additional electron.

Answer:

Iodine tincture also known as weak iodine solution is a combination of iodine, sodium iodide, ethanol, and water. It is a disinfectant or antiseptic.

Applications:

When we get cuts and scratches it is applied. It is used mainly to clean the skin to prevent bacterial infections.

Explanation:

Hope this helps you. Have a nice day. Please mark as brainliest. It helps a lot.^_^

Answer:

crust .......

.........

Answer:

Iron oxides form when oxygen, a product of photosynthesis, is in the atmosphere.

Answer:

The Universe will continue to expand :)

Explanation:

Dark matter reverses the effect of gravity in some cases, and the Doppler effect also supports this claim, in which it states that the later the star has formed, the farther away it will be from the center/origin point of our universe.

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Answer:

A balanced chemical equation represents a chemical reaction that obeys the Law of Conservation of Mass (Matter). It can be thought of as describing how many atoms or molecules of reactants are consumed in order to produce a certain number of atoms or molecules of products.

The mass of Hydrogen gas produced when 10.0 g of sodium reacts with excess water is 0.44 g.

From the question,

We are to determine the mass of Hydrogen gas produced when 10.0g of sodium reacts with excess water.

From the balanced chemical equation for the reaction

2Na + 2H₂O → 2NaOH + H₂

This means

2 moles of sodium reacts with 2 moles of water to produce 2 moles of sodium hydroxide (NaOH) and 1 mole of Hydrogen gas.

Now, we will determine the number of moles of sodium present

Mass of sodium = 10.0 g

Atomic mass of sodium = 22.99 g/mol

From the formula

[tex]Number\ of\ moles\ = \frac{Mass}{Molar\ mass}[/tex]

∴ Number of moles of sodium present = [tex]\frac{10.0}{22.99}[/tex]

Number of moles of sodium present = 0.43497 mole

From the balanced chemical equation

2 moles of sodium reacts with 2 moles of water to produce 1 mole of Hydrogen gas.

Then,

0.43497 mole of sodium will react with 0.43497 mole of water to produce [tex]\frac{0.43497}{2}[/tex] mole of Hydrogen gas

[tex]\frac{0.43497}{2} = 0.217485[/tex]

∴ 0.217485 mole of Hydrogen gas was produced during the reaction

Now, for the mass of Hydrogen gas produced

Using the formula

Mass = Number of moles × Molar mass

Molar mass of H₂ = 2.016 g/mol

∴ Mass of Hydrogen gas produced = 0.217485 × 2.016

Mass of Hydrogen gas produced = 0.43845 g

Mass of Hydrogen gas produced ≅ 0.44 g

Hence, the mass of Hydrogen gas produced when 10.0 g of sodium reacts with excess water is 0.44 g.

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Answer:

Krypton

Explanation:

Answer:

C

Explanation:

trust me :)

Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\[/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question

[tex]n = \frac{5.65 \times {10}^{26} }{6.02 \times {10}^{23} } \\ = 938.5382[/tex]

We have the final answer as

Hope this helps you

Answer:The nucleus emits particles and/or energy.

Explanation:

Answer:

b

Explanation:

The concept Arrhenius equation is used here to determine the temperature dependence of the rate of a reaction. An increase in temperature increases the rate of a reaction. The correct option is B.

The rate of a chemical reaction is affected by the factors like temperature and activation energy. The influence of these factors on the rate of the reaction is explained by the Arrhenius equation.

The equation is given as:

[tex]k = A. e^{-} ^{E_{a} } /RT[/tex]

k - Rate constant

A - Frequency factor

Eₐ - Activation energy

R - Gas constant

T - Temperature

Since 'Temperature' appears in the denominator of the negative power of the exponential factor of the equation, it is evident that an increase in temperature increases the value of rate constant and thereby increases the rate of the reaction.

Thus the correct option is B.

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Answer:

We know that in the decay process the sum of molecular number as well as molecular weight should be constant.

The following three reaction are as follows

1 .

Explanation: