please help PLSSSS
2020020200

Please Help PLSSSS2020020200

Answers

Answer 1

Answer:Well the water molecules attract each other, and the oil molecules stick together.

sorry number two im not sure sorry:(

Explanation:


Related Questions

which organs are part of the respiratory system ​

Answers

It includes the lungs, airways, and blood vessels. The muscles that power your lungs are also a part of the respiratory system.

Explain how the temperature of a substance is related to the kinetic of it molecules.

Answers

Answer: this is the explanation

Explanation:

the temperature of a substance is related to the average kinetic energy of the particles of that substance. When a substance is heated, some of the absorbed energy is stored within the particles, while some of the energy increases the motion of the particles

More kinetic energy means more collision of particles,therefore, as particles collide more the temperature rises.

what is the correct answer !

Answers

The answer for this question is A!

Answer:

Hi there, The correct answer is, OPT A

Explanation:

Please mark as the brainliest

What is 2+2 plzzzzz help I’m only 83

Answers

Answer: 4

Explanation: if you move to spaces in a number line from 2 you would be at 4

Which of the following is an example of chemical energy being used?
A.Eating a sandwich
B.Reading a book
C.Switching on a fan
D.Turning on the light

Answers

I feel like it's C. or D. but I guess it's C.

why are cells small?​

Answers

Answer:

you know what i really dont know but imagine if they were huge

Explanation:

Because if a cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume.
They are also small so they can maximize the ratio of surface area to volume. Smaller cells have a higher ratio which allows more molecules and ions move across the cell membrane per unit of cytoplasmic volume.

basically cells are small because they need to be able to get the nutrients in and waste out quickly.

0.65743 In scientific notation

Answers

202827.0000 is the answer I think idrk

If you add more molecules but do not change the temperature or the pressure, what will happen to the system?
the molecules will move faster
O the volume will decrease
the volume will increase
the molecules will move slower

Answers

Answer:

the volume will increase

Explanation:

The kinetic energy of gas molecules depend upon the temperature . If temperature is increased , the molecules will move faster . When temperature is decreased , they move slower .

Hence when more molecules are added to a gas without changing its temperature , the velocity of gas molecules will remain unchanged .

Since pressure  is also constant , it is volume which will be increased .

It can be explained from universal gas formula as follows

PV = nRT

P , R and T is constant ,

V ∝ n

Volume is proportional to n which depends upon number of molecules .

So volume will increase if number of molecules increases .

10
If velocity is positive, which would most likely yield a negative acceleration?
O O OO
A final velocity that is faster than an initial velocity.
A time that is less than a half hour.
An initial velocity that is faster than a final velocity.
A time that is greater than a half hour.

Answers

Answer:

An initial velocity that is faster than a final velocity

Explanation:

The relationship between velocity and acceleration is given as follow;

Acceleration = Change in velocity / Time

Change in Velocity = Final Velocity - Initial Velocity

From the formular, time is not able to affect the sign of the acceleration.

A negative acceleration is also referred to as deceleration and this occurs when there is a drop in velocity.

A drop in velocity occurs when the initial velocity is faster than the final velocity.

PLZZZ HELP I NEED ANSWER ASAP THE FIRST ANSWER GETS BRAINLIEST

How is thermal energy transferred from Earth's core?

Through the absorption of water heated by the sun
Through convection that takes place in the atmosphere
Through conduction from magma to water and rocks
Through the sun's radiation that heats the ground

Answers

Answer:through the conduction from magma to water and rocks

Explanation:

(b) 28.2 yd to centimeters

Answers

Answer:

2578.608 centimeters in 28.2 yards.

Explanation:

There are 91.44 centimeters to a yard. Multiplying 91.44 by the number of yards, we get the number of centimeters per yards.

91.44(28.2) = 2578.608

Answer:

hruejhehee7 suhdbdudud d d

Explanation:

jejeij3j3n3jeij

How many significant figures are in the number 90027.00?

Answers

Answer:

Scientific Notation: 3.45 x 10^5

E Notation: 3.45e5

Explanation:

Which of the following molecules is most likely an enzyme?
water
glucose
protease
monosaccharide

Answers

Answer:

protease is an enzyme

Explanation:

It hydrolyse peptide bonds of proteins and also called proteolytic enzymes.

protease! - it as an enzyme :)

At what temperature will equal masses of HCl and NH4CI dissolve in 100g water?

Answers

Explanation:

NH4Cl at 90°C _.70 a ... m aximum amount of solute that will dissolve at that specific temperature (no ... A mass of 100 g of NaNO3 is dissolved in 100 g of water at 80°C. Is the ... SO2, NH3, HCl.

PLEASE MARK AS BRAINLIEST

Consider the following reaction, which occurs at standard state:
2CI(g) -- CI2(g) H= -243.4 kJ
If 15.0g of CI is concerted to chlorine, determine the heat released from this reaction.

Answers

Answer:

The heat energy released from the reaction is approximately 51.4791 kJ

Explanation:

The given parameters are;

The heat of the reaction of 2Cl (g) → Cl₂ (g) = -243.4 J

The given mass of Cl being converted to chlorine gas, Cl₂ = 15.0 g

From the reaction for the heat of formation, we have;

2 moles of chlorine produces 1 mole of Cl₂ to release 243.4 kJ of energy per mole of Cl₂

The mass of 1 mole of Cl ≈ 35.453 g

Therefore, from number of moles, n = Mass/(Molar Mass), we have;

The number of moles of chlorine, in 15.0 g of chlorine = 15.0/35.453 ≈ 0.423 moles

Therefore, given that 2 moles of Cl produces 1 mole of Cl₂, we have;

0.423 moles of Cl will produce 0.423/2 ≈ 0.2115 moles of Cl₂

The heat energy released from the reaction is therefore, H ≈ 0.2115 × 243.4 kJ = 51.4791 kJ.

what will happen an unboiled egg is placed in the beaker of fresh water and salt water

Answers

Answer:

Explanation:

1

what is selection in science?

Answers

Answer:

Selection, in biology, the preferential survival and reproduction or preferential elimination of individuals with certain genotypes (genetic compositions), by means of natural or artificial controlling factors.

Explanation:

Hope it helps you


Natural selection, process that results in the adaptation of an organism to its environment by means of selectively reproducing changes in its genotype, or genetic constitution.

Why is most of the Earth’s fresh water unavailable?

Answers

Answer:

2.5% of the earth's fresh water is unavailable: locked up in glaciers, polar ice caps, atmosphere, and soil; highly polluted; or lies too far under the earth's surface to be extracted at an affordable cost.

Explanation:

The ability to pound metal into a flat sheet without breaking it is:

A. Luster
B. Malleability
C. Ductile

Answers

Answer: B

Explanation: Cuz .

Answer: The answer to your question is A

Explanation: Hey I miss you

Ionic bonds form between _____ which form positively charged ions and _____ which form negatively charged ions.

Answers

ionic bonds form between metals which form positively charged ions and nonmetals which form negatively charged ions.

When you break an iron magnet into two pieces, you get ____.


two north poles

two south poles

two north poles and two south poles

a piece of iron that is no longer magnetic

Answers

Answer:

two north poles and two south poles

Explanation:

A single magnet has a north pole and a south pole. If it is broken into two pieces, then each of the two pieces will have a north pole and a south pole.

No matter how many times or into how many pieces a magnet is broken, the resulting pieces will have two poles each.

Answer:

Each piece will still have a north pole and a south pole.

Explanation:

Explain how Coulomb's law can help you understand why some interparticle forces are stronger than others.

Answers

Answer:

Coulombs equation involves distance and the distance from one radius to the next allows us to predict certain characteristics such as pull and attraction. For example, you would expect, a higher charge on the ion and a higher dipole moment causes a larger force. This is due to the magnitude which is the distance between these two and effectively that is how Columbus law comes into play.

Coulomb's law states that the force of repulsion or attraction among both two charged bodies is directly proportional to the product of their charges as well as inversely proportional to the square of the length between them.

What is Coulomb's law?

An electric force is created when two charged particles collide. The forces will be greater if you have larger charges.

Coulomb's Law can be understood by combining these two ideas and the fact that charges can attract and repel each other. It is a formula for calculating the electrical forces between two objects.

Coulomb's equation involves distance, and the distance between two radiuses allows us to predict certain characteristics such as pull and attraction.

As you might expect, a higher charge on the ion and a higher dipole moment result in a greater force. This is due to the magnitude of the distance between these two, and this is where Columbus law comes into play.

Thus, this way, Coulomb's law can help you understand why some interparticle forces are stronger than others.

For more details regarding Coulomb's law, visit:

https://brainly.com/question/506926

#SPJ2

would using a strainer be filtration?

Answers

Answer:

To some extent, yes

Explanation:

DESCRIBE the five types of chemical reactions
(Synthesis, Decomposition, Single displacement, Double displacement, Combustion)

Answers

Syntesis- is a reaction that occur when two different atoms interact to form a different compound.
Decomposition- is a reaction in which compound breaks down into two or more simple substances.
Single displacement- is a reaction in which one element is substituted for another element in a compound
Double displacement- is a reaction in which the reactant ions exchange places to form new products.
Combustion- is a reaction in which the substance reacts with oxygen from the air, simply said combustion is when something’s burininv.

The study of chemicals is called chemistry.

When two elements react together to form a new compound is called a reaction.

When two-element join together to form a new compound is called synthesis.

[tex]C + O_2 --> Co_2[/tex]

The breakdown of a compound into two different elements is called decomposition.

[tex]H_20 ----> H_2 + O_2[/tex]

The substitute of one element in the compound is called single displacement.

[tex]Fe + H_2So_4---> FeSo_4+ H_2[/tex]

The substitute of two-element in the compound is called double displacement.

[tex]BaCl + H_2So_4 + ---> BaSo_4 + HCl[/tex]

The burning of the element in the presence of oxygen is called a combustion reaction.

[tex]C + O_2 ---> CO_2[/tex]

Hence, the answer is mentioned above.

For more information, refer to the link:-

https://brainly.com/question/12985618

Match the subatomic particle to its best explanation:



PHOTON

a fermion
b composite particle
c weak force
d strong force
e forces
f leptons
g up
h +2/3
i gravity

Answers

Answer:

a

Explanation:

aaaa

which diagram would it be?

Answers

Answer:

2CH4 ------> 3H2 + C2H2

Explanation:

The law of conservation of mass states that atoms can neither be created nor destroyed in a chemical reaction.

The implication of this law is that the number of atoms of each element on the reactant side must be equal to the number of atoms of each element on the product side.

This law is only obeyed by the reaction, 2CH4 ------> 3H2 + C2H2

There were eight atoms of H on the left hand side as well as the right and side of the reaction equation. There were two atoms of C on both the left and right hand sides of the reaction equation respectively. Hence, the law was obeyed here.

Which one of the following is a chemical property?
A. A wood block is less dense than water
B. Gold bar is shiny
C. Bubbles form when baking soda and vinegar are mixed.
D. Water turns from liquid to gas at 1000C.


pls help thx

Answers

The correct answer is C

The forming of bubbles when baking soda and vinegar are mixed is a result of chemical property.

Chemical Properties

Chemical properties of materials are properties that are due to the chemical composition of the materials.

The formation of bubbles when baking soda is mixed with vinegar is a result of the evolution of carbon dioxide gas.

Baking soda reacts with vinegar to produce carbon dioxide and other products according to the chemical equation below:

NaHCO3 + CH3COOH → CO2 + H2O + CH3COONa

More on chemical properties can be found here: https://brainly.com/question/1728902?referrer=searchResults

66 A student wants to design a controlled experiment to solve the following problem: When placed in a freezer, will hot water or cold water reach 0°C faster?
The student plans to place two containers with equal masses of water (one hot and one cold) in the same freezer in the classroom.
a List three conditions the student should keep constant for the hot-water and cold-water setups when planning this experiment. [3]
b For each condition you name, give a scientific reason why the condition needs to be the same for both the hot-water and cold-water setups

Answers

Answer:

Explanation:

is guiZ

Which of the following is not a unit of volume?

A

L


B

mL


C

m^3

​3

​​


D

cm^2

​2
PLEASE ANSWER ASAP !! NEED THIS HANDED IN TN
​​

Answers

Answer:

The orest one is possible D

Explanation:

Jana is modeling mutations using the word "FRIEND."
Which version of the word "FRIEND' models a deletion mutation?
A FRIENDS
B. DRIEND
C. FIEND
D. DNEIRF

Answers

Answer:

It is c I am doing the test I hope this helps ; )

Explanation:

Answer:

c

Explanation:

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