What are two different ways that electrons can become excited

Answer:

Atoms are composed of particles called protons, electrons and neutrons. ... A particular atom will have the same number of protons and electrons and most atoms have at least as many neutrons as protons. Protons and neutrons are both composed of other particles called quarks and gluons.

Particles can be atoms, molecules or ions. The term molecule is often used incorrectly to refer to any type of chemical compound. A molecule is a neutral particle made of two or more atoms bonded together. Take care with your own language, especially when referring to compounds formed during chemical reactions.

Answer: Element

Explanation: Table sugar, or sucrose, is not a mixture. It is a compound. Let me start with a pure substance and work up from there. Elements are pure substances because they cannot be broken down any more.

Answer:

I would guess a element

Explanation:

Answer:

Initial Volume ( V₁ 0.43L

Initial Concentration (M₁) 13M

Final Concentration ( M₂) 3.0M

Final Volume ( V₂) = ?

we have to determine the final volume of diluted solution .

Using Dilution Equation

[tex] \bull\bf \: M_{1}V_{1} = M_{2}V_{2} [/tex]

Put the given value

[tex]\sf \longrightarrow \: (13 \times 0.43) = (3 \times \: V_{2} ) \\ \\ \\ \sf \longrightarrow \:(5.59) = 3V_{2} \: \\ \\ \\ \sf \longrightarrow \: \:V_{2} \: = \dfrac{5.59}{3} \\ \\ \\ \sf \longrightarrow \: \: V_{2}\: = 1.86 \: litre[/tex]

Therefore,

Answer:

Lightbulb: electrical energy to light energy

Alarm Clock: electrical energy to sound energy

Rollercoaster: electrical energy to mechanical energy

Riding a Bike: chemical energy to mechanical energy

Explanation:

Light bulbs, alarm clocks, and roller coasters require electrical energy to work. This energy then changes into the subsequent types. Light bulbs primarily emit that energy in the form of light, alarm clocks change that energy into sound, and roller coasters begin to move (mechanical). People power bikes, and the energy in our body is stored as chemical energy. So, when we rides bikes, that energy gets turned into moving (mechanical) energy.

Answer:

Image result for What evidence in Side View lets you know that upwelling is happening in these locations?

Winds blowing across the ocean surface often push water away from an area. When this occurs, water rises up from beneath the surface to replace the diverging surface water. This process is known as upwelling.

Explanation:

Answer:

Explanation:

720 ml

Answer:

720 ml

Explanation:

Answer:

blue star is the hottest of all

Explanation:

Blue stars are blue because of the temperature of their surface and they are so hot because they are much more massive than cooler stars like our sun.

Answer:

Newton's Second Law states that an object's acceleration depends on the net force upon the object, as well as the object's mass.

So, a real world example of this would be pushing a vehicle out of a ditch. If your vehicle is a motorcycle, with a relatively small mass, then you don't need to apply much force on it, as compared to if the vehicle were a pickup truck, with a large mass, which would require much more force applied to move it out of the ditch.

I hope this helps! Feel free to give me Brainliest if you feel this helped. :)

Answer:

One reason why it could be important is hitting a ball. if the ball is heavy it will be harder to hit it far than if its light.

Answer:

● They have more than two carbons that are bonded to only one other

Explanation:

They have carbons bonded in a single row from one end of the molecule to the other end of the molecule. ... The straight-chain alkane has two more hydrogen atoms than the cycloalkane

Answer:

D. They have carbons bonded in a single row from one end of the molecule to the other end of the molecule.

Explanation:

I got it wrong when I chose C - They have more than two carbons that are bonded to only one other carbon. So yeah p.s UNUS ANNUS

why helium is inactive

By applying the Boyle's equation and substituting our given data the volume of the container was found to be 418.14 Litres

Given Data

We know that the relationship between pressure and temperature is given as

PV = nRT

R = 0.08206

Making the volume subject of formula we have

V= nRT/P

Substituting our given data to find the volume we have

V = 5.1169*0.08206*911/0.9148

V = 382.522353554/0.9148

V = 418.14 L

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Answer:

A= Coconut oil, B= Water, C= Sea water

Explanation:

oil is dense, water will allow things to float, but not as well as sea water

Neptune’s orbit affect its climate by creating unpredictable storms.

Neptune's orbital period is 165 years in which seasons are 40 years long. Neptune has unique and strangest weather in the entire Solar System. It has huge storms with extremely high winds.

So we can conclude that Neptune’s orbit affect its climate because equatorial orbit creates unpredictable storms.

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Addition of NaOH will cause the equilibrium position to move to the left because of the removal of the hydrogen ions.

When changes in temperature, pressure or concentration is imposed on a reaction system in equilibrium, the system will readjust itself in order to annul the change.

This change occur when the equilibrium position is moved to the left or right. For the reaction, CrO4^2-+ 2H^+ ⇄ Cr2O7^2- + H2O, addition of NaOH will cause the equilibrium position to move to the left because of the removal of the hydrogen ions.

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Answer:

409.0 grams

Explanation:

total mass-(mass of salt+mass og empty beaker)

Answer:

442

Explanation:

og empty beaker + salt

Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body.[2][8] These contrast with benign tumors, which do not spread.[8] Possible signs and symptoms include a lump, abnormal bleeding, prolonged cough, unexplained weight loss, and a change in bowel movements.[1] While these symptoms may indicate cancer, they can also have other causes.[1] Over 100 types of cancers affect humans.[8]

Tobacco use is the cause of about 22% of cancer deaths.[2] Another 10% are due to obesity, poor diet, lack of physical activity or excessive drinking of alcohol.[2][9][10] Other factors include certain infections, exposure to ionizing radiation, and environmental pollutants.[3] In the developing world, 15% of cancers are due to infections such as Helicobacter pylori, hepatitis B, hepatitis C, human papillomavirus infection, Epstein–Barr virus and human immunodeficiency virus (HIV).[2] These factors act, at least partly, by changing the genes of a cell.[11] Typically, many genetic changes are required before cancer develops.[11] Approximately 5–10% of cancers are due to inherited genetic defects.[12] Cancer can be detected by certain signs and symptoms or screening tests.[2] It is then typically further investigated by medical imaging and confirmed by biopsy.[13]

Answer:

Graph is attached below.

Explanation:

Go to insert, then chart, then select line, then go to sheets and edit it to fit what you need it to say.

Hope this helps! Please let me know if you need more help, or if you think my answer is incorrect. Brainliest would be MUCH appreciated. Have a great day!

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Answer:

reaction with oxygen

Explanation:

The term oxidation was originally used to describe reactions in which an element combines with oxygen.

Answer:

This is the reverse of a synthesis reaction. Replacement reactions occur when elements switch places in compounds. In a single replacement reaction, one element takes the place of another in a single compound. In a double replacement reaction, two compounds exchange elements

The new volume of a gas at STP that occupies 16L of space is 27.43L.

The volume of a given gas can be calculated using the following expression:

P1V1/T1 = P2V2/T2

Where;

1 × 16/273 = 2.6 × V2/468

16/273 = 2.6V2/468

0.0586 × 468 = 2.6V2

V2 = 27.43

Therefore, the new volume of a gas at STP that occupies 16L of space is 27.43L.

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Answer:

increases

Explanation:

When an atom of phosphorus becomes a phosphide ion (P3–), the radius increases because 3 more electrons are added, and they placed on higher sublevels.

Answer:

Carbon has 2 unpaired electrons

Oxygen has 2 unpaired electrons

Sulfur has 2 unpaired electrons

Explanation:

The bond energy is the energy that must be supplied to break the bond. Ionic substances are held together by strong bonds.

This question is incomplete but I will try to explain what is meant by average bond energy as the tables are missing.

The average bond energy of a bond simply means the energy that is stored in that bond as it holds two atoms together. It is equal to the energy that must be supplied to break the bond. The numerical value of the bond energy can not be deduced as the data is missing.

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Answer: 50%

Explanation:

The best we get from the moon is a full moon, which is just half of the moon shining from the earth while the other half is in complete darkness.

Answer: Nitric acid + Hydrogen disulfide

Explanation: To balance HNO3 + H2S = NO + S + H2O you'll need to be sure to count all of atoms on each side of the chemical equation.

Once you know how many of each type of atom you can only change the coefficients (the numbers in front of atoms or compounds) to balance the equation for Nitric acid + Hydrogen disulfide .

Important tips for balancing chemical equations:

Only change the numbers in front of compounds (the coefficients).

Never change the numbers after atoms (the subscripts).

The number of each atom on both sides of the equation must be the same for the equation to be balanced.

Two common synthetic indicators are

The indicators are used to check whether the solution is basic or acidic

Answer:

solidification

Explanation: