The table indicates that nitrogen and oxygen are the main components of the atmosphere by volume. Together these two gases make up approximately 99% of the dry atmosphere. Why are these gases important?.

Answers

Answer 1

Answer:

Explanation:

Nitrogen and oxygen are important components of the atmosphere because they are essential for life on Earth.

Nitrogen makes up about 78% of the Earth's atmosphere by volume, and it is an important component of proteins, nucleic acids, and other biomolecules. It is also a vital component of the Earth's nitrogen cycle, which is the process by which nitrogen is converted into various forms and transported through the environment.

Oxygen makes up about 21% of the Earth's atmosphere by volume, and it is essential for respiration and the production of energy in living organisms. It is also a key component of the Earth's carbon cycle, which is the process by which carbon is exchanged between living organisms, the atmosphere, and the Earth's surface.

Together, nitrogen and oxygen play important roles in the functioning of the Earth's ecosystems and the support of life on the planet.


Related Questions

When elements bond together they use energy in the bonding process.
What is this energy process called?

Answers

Answer:

chemical energy

Explanation:

This energy process is called exothermic when the reactants are at a higher energy level as compared to the products while it is an endothermic process if the reactant require energy to form products.

What is the process of bonding ?

The covalent bonds that bring atoms together in the form of molecules store potential energy. This is commonly referred to as chemical energy.

When two different elements bond together to form compounds , the covalent bonds initial present are broken and new bonds are formed .

The energy level of the new formed compound will be lower than the individual atom as the difference in energy level of both the elements is released as heat.

This energy process is called exothermic when the reactants are at a higher energy level as compared to the products while it is an endothermic process if the reactant require energy to form products.

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1. A student mixes two liquids together and notices that a white solid has formed
at the bottom of the container.
What can the student conclude?
1. A precipitate has formed.
2. A physical change has occurred.
3. A chemical reaction has occurred.
4. A chemical change has occurred.

Answers

Answer:

3. A chemical reaction has occured

A student mixes two liquids together and notices that a white solid has formed at the bottom of the container which means precipitate has formed.

What is precipitation reaction ?

Precipitation is the process of creating an insoluble compound in chemistry by either reacting two salts or altering the temperature to alter the solubility of the compound. Additionally, the solid that results from a precipitation reaction is referred to as "precipitate."Precipitation can be a sign that a chemical reaction has taken place, but it can also happen if the concentration of a solute is higher than its solubility. The process of small, insoluble particles aggregating together or forming an interface with a surface, such as the container wall or a seed crystal, is known as nucleation, and it occurs before precipitation.Precipitation is the process of transforming a liquid into a solid. A precipitant is a chemical that gives rise to a solid in a liquid solution. The term "precipitate" refers to the resulting solid. In the event that the molecule size of the insoluble compound is tiny or there is deficient gravity to attract the strong to the lower part of the compartment, the hasten might be equitably dispersed all through the fluid, shaping a suspension. Any process that separates the precipitate from the solution's liquid portion, known as the supernatant, is referred to as sedimentation. Centrifugation is a common technique for sedimentation. A "flower" is a powder that forms after the precipitate has been recovered.

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A sample of unknown gas has a temperature of 378k. When the temperature is increased to 546k,the volume also increases to 1047 ml. What was the original volume ?

Answers

Given :

A sample of unknown gas has a temperature of 378 K.

[tex]T_i = 378 \ K , \ T_f = 546 \ K[/tex]

When the temperature is increased to 546 K, the volume also increases to 1047 ml.

[tex]V_f - V_i = 1047 \ ml[/tex]

Solution :

We know, temperature is directly proportional to volume.

[tex]\dfrac{T_i}{T_f}=\dfrac{V_i}{V_f}\\\\\dfrac{T_i}{T_f} = \dfrac{V_i}{1047 + V_i}\\\\\dfrac{V_i}{1047+V_i}=\dfrac{378}{546}\\\\546V_i = 378V_i + 378\times 1047\\\\168V_i = 3,95,766\\\\V_i = 2,355.75\ ml[/tex]

Therefore, the original volume is 2.355.75 ml.

any force that causes an object to move in a circle is called

Answers

Answer: Any force that causes an object to move in a circle is called centripetal force.

Help me pretty please

Answers

Answer:

I think it is D

Explanation:

number 3 ...................​

Answers

It’s B



Silicon is used for electronic devices because it is an element with very special properties. One of it's most important properties is that it is a semiconductor.




how do you balance equations?​

Answers

Answer:

In order to balance the chemical equation, you need to make sure the number of atoms of each element on the reactant side is equal to the number of atoms of each element on the product side. In order make both sides equal, you will need to multiply the number of atoms in each element until both sides are equal

Explanation:

Answer:

what he said so you can give him brainliest

Explanation:

The attraction between water molecules and a Nation or a Clion occurs because water molecules are —
A.
nonpolar
B
symmetrical.
С
polar.
D
linear.

Answers

Answer:

answer is

c. Polar

hope this helps

Which one is the right answers?

Answers

I believe its Sodium Chloride.
I hope that helps!

which properties should Beryllium (Be) have?

A. Liquid
B. Low melting point
C. Shiny
D. Poor conductor

Answers

Answer: low melting point



Explanation: its an earth metal
The answer: is B low melting point


❤️❤️❤️

Your friend says, “chemical changes are caused by an input in energy. In physical changes, there is no transfer of energy” is your friend correct? Why or why not?

Answers

Answer: Your friend is incorrect.

Explanation: If we have an object or something that isn’t moving, (let’s say a notebook on a desk). If there is change, and the notebook moves, there is acceleration. Force = Mass times acceleration, f = m*a. There has to be a force, first of all. If you touched the notebook and moved it, some of your energy is transferred and now the notebook has kinetic energy. If our system is you and the notebook, the total energy doesn’t change. the energy is transferred, but doesn’t change. Your friend is not correct. Please give brainliest hope this helped!

Which phrase best describes an individual organ

Answers

Answer:

the answer is B

Explanation:

Please help me pretty please

Answers

Answer:

The answer would probably be C. The clock can be seen and heard.

The boiling process is considered to be____

Answers

your answer is D. physical change, because a new substance is not formed.

The boiling process  is considered to be a physical change as no new substance is formed.

What is a physical change?

Physical changes are defined as changes which affect only the form of a substance but not it's chemical composition. They are used to separate mixtures in to chemical components but cannot be used to separate compounds to simpler compounds.

Physical changes are always reversible using physical means and involve a change in the physical properties.Examples of physical changes include melting,boiling , change in texture, size,color,volume and density.Magnetism, crystallization, formation of alloys are all reversible and hence physical changes.

They involve only rearrangement of atoms and are often characterized to be changes which are reversible.

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What is the temperature?

Answers

Answer:

17.25 degrees

Explanation:

....but I cannot tell you if that is   °C    or    °F    <===== that is left out of the question.

1. Which functional group is found in an ester? (1 point)

Answers

Answer:

2nd one

Explanation:

Fact!

A gas has three initial measurements: temperature 306 K, pressure 740 mm Hg, and volume 36 mL. The gas's temperature is increased to 850 K while its pressure is increased to 1750 mm Hg. What is the new volume of the gas in mL?

Answers

Answer:

The new volume of the gas is 42.28 mL.

Explanation:

Gay Lussac's law indicates that when there is a constant volume, as the temperature increases, the pressure of the gas increases. And when the temperature is decreased, the pressure of the gas decreases. This law can be expressed mathematically as follows:

[tex]\frac{P}{T}=k[/tex]

where k = Constant

Boyle's law says that "The volume occupied by a given gaseous mass at constant temperature is inversely proportional to pressure." This law is expressed mathematically as:

P * V = k

Finally, Charles's Law indicates that as the temperature increases, the volume of the gas increases and as the temperature decreases, the volume of the gas decreases. In summary, Charles's law is a law that says that when the amount of gas and pressure are kept constant, the quotient that exists between the volume and the temperature will always have the same value:

[tex]\frac{V}{T}=k[/tex]

Combined law equation is the combination of three gas laws called Boyle's, Charlie's and Gay-Lusac's law:

[tex]\frac{P*V}{T}=k[/tex]

Studying an initial state 1 and a final state 2, it is satisfied:

[tex]\frac{P1*V1}{T1}=\frac{P2*V2}{T2}[/tex]

In this case:

P1= 740 mmHgV1= 36 mLT1= 306 KP2= 1750 mmHgV2= ?T2= 850 K

Replacing:

[tex]\frac{740 mmHg*36 mL}{306 K}=\frac{1750 mmHg*V2}{850 K}[/tex]

Solving:

[tex]V2=\frac{850 K}{1750 mmHg} *\frac{740 mmHg*36 mL}{306 K}[/tex]

V2= 42.28 mL

The new volume of the gas is 42.28 mL.

5 - What is the pH of a solution with a
pOH of
8.6? What are the [+] and [OH']
concentrations?

Answers

Answer:

the pH solution is 4.9.

[[tex]H^{+}[/tex](aq)] = [tex]10^{-pH}[/tex]

Explanation:

The solution is 4.9

Under which condition will the atmospheric pressure be greater. When the air is cold, or when the air is warm

Answers

When the air is warm.

The actual value for absolute zero in degrees Celsius is −273.15. Use the formula below to determine your percent error for both gas samples.
|experimental value – actual value| x 100
actual value


Please just tell me how to find the experimental value

Answers

Answer:

As you noticed, the percent-error formula needs you to use a value in the ... The actual absolute zero is 275C below my coldest recorded value. ... The only way your calculations makes sense is you're trying to calculate how ... Next, I'll interpret "I found that AZ is at -258°C" as "I calculated AZ to be 260 degrees below 2°C".

Explanation:

The experimental error will be 8.95%

Calculating percentage error.

The formula  used for calculating the percentage error is expressed as:

[tex]\% error=\frac{|exp. \ value - actual \ value|}{actual \ value} \times 100[/tex]

Given the following parameters

Actual value = −273.15 degrees Celcius

Let the experimental value be 300 degrees Celcius (since we are not given)

[tex]\% error=\frac{|300 - 273.15|}{300} \times 100\\\% error=\frac{|26.85|}{300} \times 100\\\% error=8.95\%[/tex]

Hence the experimental error will be 8.95%

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How many molecules are in 8.2 moles of water,H2o​

Answers

Answer:

4.938×10^24 molecules

Explanation:

a mole is 6.023×10^23

(8.2)×(6.023×10^23)=4.938×10^24

PLEASE HELP
A student labels two 250 milliliter beakers with the letters A and B. She puts 100 milliliters of water in each of them. She adds some salt to beaker A and stirs until the salt dissolves completely. Then she adds another 50 milliliters of water to beaker A. She adds more salt to beaker B, and the salt in beaker B doesn't completely dissolve in the water even after much stirring. The solution in beaker A is The solution In beaker B is ​

Answers

Answer:

Solution B is saturated and solution A is unsaturated

Explanation:

Saturated solution contains the maximum concentration of a solute dissolved in the solvent (usually water) and if extra solute is added to saturated solution, that solute will not dissolve.

Unsaturated solution means that more of a substance can be dissolved (in this example salt).

In an ideal situation where no heat energy is produced, what is the relationship between the chemical energy provided by the battery and the electrical energy produced according to the Law of Conservation of Energy?

Answers

Answer:

See explanation

Explanation:

The principle of conservation of energy states that energy can neither be created nor destroyed but can be converted from one form to another. Hence, chemical energy in a battery can be converted to electrical energy.

Usually, the conversion of energy from one form to another is not 100% efficient according to the second law of thermodynamics. Some energy is wasted in the process, sometimes as heat.

Hence, in an ideal situation where no heat energy is produced; all the chemical energy is converted to electrical energy (100% energy conversion). There will be no energy loss if no heat is produced.

Colour of crushed chalk + Iodine solution​

Answers

I guess if you mix them together, the chalk would get less harder.

What causes the expression of a recessive trait? one dominant and one recessive factor (allele) one dominant gene two recessive factors (alleles) two dominant factors (alleles)

Answers

Answer: i think it’s two recessive alleles

Explanation:

Answer:Two recessive alleles is correct

Explanation:

I TOOK THE TEST (k-12 student) TwT

How many mL are in 5.000 L

Answers

Answer:

Start off and multiply the volume value by 1000,

so that would mean

5000 x 1000

= 5,000,000 mL

What are the major parts of the ecosystem

Answers

Answer:

Ecosystems have lots of different living organisms that interact with each other. The living organisms in an ecosystem can be divided into three categories: producers, consumers and decomposers. They are all important parts of an ecosystem. Producers are the green plants.

Explanation:

Hope this helps

Which one is it? It’s in my science class and i have no idea

Answers

Answer:

More energy then closer electrons.

Explanation:

As electrons move away from the nucleus, their energy increases.

9.) How many grams of phosphorus can be recovered
from 245.0 g triphosphorus pentanitride?
a.) 139.7 g
b.) 105.3 g
c.) 57.01 g

Answers

According to stoichiometry as 162.955 g of phosphorous pentanitride has 92.919 g of phosphorous , thus 245 g of phosphorous pentanitride   will have 139.7 grams of phosphorous.

What is stoichiometry?

Stoichiometry is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.

Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.It is important as it helps the chemical reactions to obey law of conservation of mass.

As  162.955 g of phosphorous pentanitride=92.919 g of phosphorous

∴ 245 g of phosphorous pentanitride   =245×92.919/162.955=139.702 g.

Thus, 139.702 g  of phosphorus can be recovered from 245.0 g triphosphorus pentanitride.

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What structural units make up ionic solids?
O A. Molecules
B. Nonmetal atoms
O C. Metal atoms
O D. lons

Answers

The option that is the structural units that make up ionic solids is option   D. Ions

What are ionic solids?

Ionic solids are made up of ions, which are atoms or groups of atoms that have a positive or negative charge due to the gain or loss of electrons. In ionic solids, the positive ions (cations) are typically formed by metal atoms, while the negative ions (anions) are typically formed by nonmetal atoms. The ions in ionic solids are held together by electrostatic forces of attraction, called ionic bonds.

Therefore, These bonds are formed when the electrons from the outermost energy level of the metal atom are transferred to the outermost energy level of the nonmetal atom, creating a stable compound.

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