PLEASE HELP ASAP 100 POINTS!!!!!

PLEASE HELP ASAP 100 POINTS!!!!!

Answers

Answer 1

Answer:

Melting

Explanation:

• A chemical change is a change that can be reversed.

Other chemical changes include;

Melting (solid to liquid)Evaporation (liquid to gas)Condensation(gas to liquid)Sublimation (solid to gas and gas to solid)[tex].[/tex]

Related Questions

Is there a relationship between atomie radius and electronegativity? Why or why not?

Answers

Answer:

Yes

Explanation:

Electronegativity is the tendency for atoms to keep electrons closer to them. So, if the atoms are smaller there, there is a stronger pull on the electrons to keep them closer. So, the larger the atom get, due to electron shielding, it become less electro negative. I hope this help. You might get a better explanation from Khan Academy's video on Electronegativity

Answer:

A relationship is intuitively expected

Does electronegativity relate to atomic radius? A relationship is intuitively expected between electronegativity and radius: the size of an atom is determined by the distribution of electrons around its nucleus. The closer the electrons are to the nucleus, the more tightly they are bound, thus increasing the electronegativity of the atom.

Explanation:

difference between molicularity and order of reaction​

Answers

Answer:

Molecularity is the number of ions or molecules that take part in the rate determining step

Order of reaction is the number of molecules of reactant whose concentration changes during the chemical change

where on the periodic table are noble gases found?

Answers

Answer:

The farthest to the right of the Periodic Table. They have 8 valence electrons. Some Noble gases are Helium, Neon, and Argon.

How many atoms are in 3 C2H6

Answers

Very good question, I can easily answer that for you if it has 3 moles of ethane contains 6 mole of carbon atoms. so that means 3 moles of ethane contains 18 mole of hydrogen atoms.

Have a blessed day and God bless.

write the 5 major characteristics of traditional map making ​

Answers

Answer:

insta

Explanation:

Zak_1231 follow me

The volume of a balloon is 30 L at 313K and a pressure of 153KPA What is the volume at 273K and 101.3kPa?

Answers

Answer:

Explanation:

The volume of a balloon is 30 L at 313K and a pressure of 153KPA What is the volume at 273K and 101.3kPa?

from PV=nRT we can derive

PV/T =P'V'/T' so

153X30/313 = 101.3 X V'/273

OR 153 X 30 X273/(313 X 101.3) =V'

V' = 39.5 L

write name of the functional group

Answers

Answer:40=6*6(6+5)8x42

Explanation: so yea

Each school day, it takes Mrs. Wohlfert an hour to drive 50.3 miles to drop Dezzie off at daycare. While she travels on US 20, she looks at her speedometer and it says she's going 75 mph, so she better slow down! Once she arrives in Plymouth, she takes 5 minutes to get Dezzie into daycare and say goodbye. It takes Mrs. Wohlfert 10 minutes to drive the 3.9 miles between daycare and Lincoln. Mrs. Wohlfert stays at school for the day for 8 hours, then leaves Lincoln to pick up Dezzie at daycare and head home.



What is Mrs. Wohlfert's total distance traveled in a day?

What is Mrs. Wohlfert's total time travelling from when she leaves her house in the morning to when she gets back home in the afternoon?

What was Mrs. Wohlfert's instantaneous speed that she saw during her trip to school?

Answers

Answer:

7.06

Explanation:

because its improper

1. Which subatomic particles (electrons, neutrons, protons) affect stability?
2. Which subatomic particles affect charge?
3. Which subatomic particle changes the element?

Answers

Answer:

1 is protons and neutrons

2 is electrons and protons

3 Is protons

Can a non-metal replace a metal in a single replacement reaction? If yes, is a non-metal always not able to replace a metal in a single replacement reaction?

Answers

Non-metals will never replace metals or vice versa, they'll only replace itself or the only type of reaction that it is or element that it is.

Explain Rutherford’s gold foil experiment. What particle did he discover?

Answers

Answer:

this my answer

Explanation:

Rutherford's gold foil experiment showed that the atom is mostly empty space with a tiny, dense, positively-charged nucleus. Based on these results, Rutherford proposed the nuclear model of the atom.

In an experiment combining vinegar and baking soda, gas is given off. In this
chemical reaction, the vinegar and baking soda are…

A elements
B products
C suspensions
D reactants

Answers

Answer:

The correct answer is D hope this helped :3

Answer:

(D)

Explanation:

In the reaction between vinegar and baking soda, the reactants are vinegar (acetic acid) and baking soda (sodium bicarbonate). The products are sodium acetate, water, and carbon dioxide gas.

why the core is metallic and the lower mantle is not.

Answers

Answer:

due to the overlaying layers of strata (layers of earth) an high pressure is created at the core. due to this it behaves like an solid rether than being a liquid... the lower mantle is not solid because in this case the overlaying strata doesn't produce that much pressure on it..

Explanation:

brainliest plz

*
Compared with a mole of silver atoms, a mole of calcium atoms
O cannot be determined
O has fewer atoms
O has more atoms
O has the same number of atoms

Answers

to be honestl id ldm

A test tube is filled with water and a green plant called elodea.

Answers

Answer: The bubbles produced are most likely due to oxygen.

Explanation:

Photosynthesis is a phenomenon in which green plants containing chlorophyll use sunlight as a source of energy to convert carbon dioxide and water to form glucose and oxygen.

The balanced chemical reaction for photosynthesis is:

Nitrogen gas is more abundant and I miss her than oxygen however nicer than to be converted into different forms to be used by many organisms bacteria are highly involved in this describe the role of a bacteria fixing nitrogen as he lives in Barclay with some plant species be nature find bacteria and see did you find bacteria in the nitrogen cycle

Answers

Answer:

who lives in Barclays what?? this makes no sense

Explanation

What is the name of this alkene?

Answers

Answer:the name is cc bc it 4920 and hehe i just want points thank you

Explanation: lol did wsiw skwks thanks for points

If there are 100 black beans, 27 brown beans, and 173 white beans in the container, what is the percent composition of the container by bean

Answers

Answer:

300

Explanation:

Las legumbres son semillas de plantas grandes, carnosas y coloridas. Los frijoles, los guisantes (arvejas) y las lentejas son todos tipos de legumbres.

6) Which of the following would travel the farthest in column chromatography?
a. CH3CH2CH2COOH
b. C6H6
c. CH3OH
d. C8H18

Answers

The answer would be C8H18, or octane. Column chromatography is a separation technique that works off of polarity. The stationary phase, in column chromatography, are non-modified silica gels. Silica gels are normally polar. This means the solvent that will elute first are non-polar molecules...then polar molecules. The polar silica gels have a stronger interaction with polar molecules like CH3OH, and therefore will lag the solvent. Additionally, as you decrease the carbons, in hydrocarbons, the molecule becomes more polar. This is not C6H6 isn't the answer and octane is.

C8H18 will travel the farthest in column chromatography.

Chromatography is know as a process of analyzing and purifying organic compounds.

There are different forms of chromatography. there is the column chromatography, Gas chromatography etc.

Alkanes are known to be least polar and as such would travel farthest into the mobile phase of the four functional groups. C8H18 belongs to the alkanes family.

Learn more from

https://brainly.com/question/14394084

How does density affect sinking and floating in water?

Answers

Answer:

Density is a measure of how heavy something is compared to its size.

If an object is more dense than water it will sink when placed in water, and if it is less dense than water it will float.

Density is a characteristic property of a substance and doesn’t depend on the amount of substance.

Explanation:

If you compared the weight of wood and an equal amount, or volume, of water the sample of wood would weigh less than the sample of water. This means that wood is less dense than water. Since wood is less dense than water, wood floats in water, no matter how big or small the piece of wood is.

A student might want to know why a boat made out of steel can float when steel is more dense than water. This is not an easy question and requires a different approach than what students have seen so far. We do not necessarily recommend the following explanation for 5th graders but here is the idea:

An object floats when it displaces a volume of water that has a mass equal to the mass of the object. So if a material like steel is shaped into a boat and made larger and larger, it will displace more and more water. When it is large enough to displace a volume of water that has a mass equal to the mass of the boat, the boat will float.

I don’t know thanks for the points though

(NEED ANSWER NOW)

Redshift is observed when:(1 point)

A. a luminous object is stationary relative to an observer.

B. a luminous object is traveling alongside an observer.

C. a distant luminous object travels rapidly towards an observer.

D. a distant luminous object travels rapidly away from an observer.

Answers

Answer:it’s C

Explanation:

A distant luminous object travels rapidly away from an observer.

Redshift is observed when a distant luminous object travels rapidly towards an observer. Thus option C is correct.

What is luminous object?

Luminous object is defined as the sun is an example of a luminous object, whereas a non-luminous object is one that cannot create light.

It is also defined as objects that can generate their own light energy.

Non luminous object is defined as one that does not generate its own light but can reflect light from other sources.

It can also defined as object which do not generate their own light.

Redshift is defined as when the wavelength of the light is extended, it seems to be shifted towards the red section of the spectrum.

Thus, redshift is observed when a distant luminous object travels rapidly towards an observer. Thus option C is correct.

To learn more about luminous object, refer to the link below:

https://brainly.com/question/28182076

#SPJ2

Is this statement true or false?

A chemical reaction is balanced when the number of atoms of each element is the same for both the reactants and the products.


true

false

Answers

Pretty sure the answer is true

Answer:

true

tysm

tysm

tysm dear

Stems have all of these functions EXCEPT
a storing food and water
b. absorbing soil nutrients
C. supporting the plant
d. moving materials between leaves and roots

Answers

Answer:

B or A

Explanation:

choose wether A or B... give it a higher level of thinking. and good luck!

Answer:

Its b!

Explanation:

its just common sense at this point lol.

Although a scientific theory is well supported and widely accepted, what might cause it to change? HELPPP
a new evidence
b scientific law
c indivial claim
D a scientific model

Answers

although a scientific theories will support and wildly excepted, what might cause of the change?

the answer would be A, New Evidence.

Answer:

d

Explanation:

2. Differentiate the types of tectonic plates.

Answers

Answer:

Explanation:

Convergent boundaries: where two plates are colliding. Subduction zones occur when one or both of the tectonic plates are composed of oceanic crust. ...

Divergent boundaries – where two plates are moving apart. ...

Transform boundaries – where plates slide passed each other.

How many moles of ions are there in 1 mole of iron (III) oxide, Fe2O3? ​

Answers

Answer:

So one mole of Fe2O3 contains two moles of Fe3+ ions.

Explanation:

As there is an internal mole ratio of 2:3

It means that there are 2moles of iron within every mole of iron(III) oxide.

Iron III oxide is an ionic compound composed of Fe3+ ions and O2- ions. According to the formula, there are three O2- ions for every two Fe3+ ions.

Extra:

One 'unit' of Fe2O3 has two Fe3+ ions and three O2- ions, hence a dozen Fe2O3 contains two dozen Fe3+ ions and three dozen O2- ions, and a mole Fe2O3 contains two moles Fe3+ ions and three moles O2- ions.

Which of the responses contains all the true
statements and no others regarding
electromagnetic radiation (light)?

Answers

what responses am i supposed to chose from?

1. Given the word equation:
sodium chlorate → sodium chloride + oxygen
Which type of chemical reaction is represented by
this equation?
A) double replacement
B) single replacement
C) decomposition
D) synthesis

Answers

Answer:

Decompositon

Explanation:

Sodium chlorate → Sodium Chloride + Oxygen

Sodium chlorate is reactant.

Sodium chloride + Oxygen is the product.

Definition : -

Decomposition reaction is a chemical reaction in which a single reactant breaks down to simpler products.

Help meeeeeeeeeeeeeee ​

Answers

Answer:

4) 2Na + Cl2 → 2NaCl

5) 2Mg + O2 → MgO

6) 2H2 + 2O2 → 2H2O

Explanation:

4) In order for it to be well balanced, yeah you've got to add 2 in front of Na before the reaction and after the reaction.

5) Add 2 in front of Mg bcuz of the same reason in number 4 but you don't have to add 2 in front of the others bcuz it's alrd well balanced.

6) Tbh for this one, it got me staring at my cat until he freaks out but like yeahh, I tried :')

this is the answer! hope you understand it!!

How to determine the speed of light.

Please, if you wish not to receive multiple notifications, ignore answering this, for which you will be stressed and annoyed.

Answers

Answer:

Hey mate....

Explanation:

This is ur answer....

By adjusting the path length while observing the interference pattern and carefully measuring the change in path length, the wavelength of the light (λ) can be determined. The speed of light is then calculated using the equation c = λf.

Hope it helps!

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