please help!! i am struggling with this. first correct answer gets brainliest!

Answer:

It depends upon the mass of the particles also. Assuming equal mass, then the slower moving particle gains some energy, and the faster-moving particle loses energy. However, if the slower moving particle had greater mass, it could transfer energy to the faster-moving particle.

Explanation:

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Answer:

It is a good conductor of heat and electricity

Its melting point is 1453°C and its boiling point is 2913°C

It's bivalent and it has a valency of two

Answer:

See explanation

Explanation:

The question is incomplete but i will try to help you the much i can.

You see, we already know about the fact that energy is transferred from a hotter object to a cooler object. This is largely because of the collision of the molecules of a hotter body with the molecules of a cooler body ultimately leading to a transfer of energy from the hotter body to the cooler body. This now makes the temperature of the cooler body to rise.

Keep in mind that temperature is a measure of the average kinetic energy of the molecules in a body.

Hence, since the water is at a higher temperature, energy is transferred from the water to the hand and the temperature of the hand rises accordingly.

Answer:

poke a hole in the battery ( it should me charged ) and then threw it in water

simple

Answer:

pock a hole and throw it in some water

Explanation:

This answers may help you

Answer:

A

Explanation:

Dr. Laude  prefers the idea that a mole is an amount of a substance you can hold in your hand.

Mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.

It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.

It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons .Molar mass has units of gram per mole . In case of molecules, where molar mass  in grams present in one mole  of atoms is its atomic mass.

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Answer:

56 m

Explanation:

5.6 x 10^3 = 5600

5600 / 100 = 56m

Answer:

What are the answer choices

Explanation:

Answer:

The answer choices are

Explanation:

A. The ocean plants cause more weathering.

B. More algae grows and competes for resources.

C. the slow water causes more erosion.

D. Less sediment is deposited in the soil.

But the answer is (D. Less sediment is deposited in the soil.)

Answer:

Periodical development of fundamental particles and structure of atoms can be explained from different atomic models .

Explanation:

Periodical development of fundamental particles :

About 2600 years ago  an Indian sage called kanada proposed that all forms of matter are composed of very small particles called as Anu  and each Anu  is made up of smaller particles called Parmanu .

Later Greek philosopher Democritus called these atoms and according to him  atoms are indivisible and indestructible .

But Later John Dalton's postulate which suggests that atom  is indivisible  is disproved  by various experiments conducted by various scientists   :                                                                                                              

 1. Electron -  J.J Thomson discovered the electron while experimenting with cathode rays   in 1897.                                                                                              

2.  Proton - Proton was discovered by Gold stein in 1920.                              

3. Neutron was discoverer by James Chadwick   in 1932 by bombardment of alpha particle at beryllium .                                                                         Structure of atom :  

Schrodinger's model of atom : This model  is most precise model and  is used  in present days . According to him  electrons are present in a particular region or space around the nucleus called as orbitals where probability of finding the electrons are more.          

Answer:

C

Explanation:

For A, 2Al(OH)3 contains 6H on the left side of the equation but only has 3H on the right side of the equation, thus its not balanced

For B, there is 2(Al2), which is 4, on the left side of the equation but only 2Al on the right side of the equation, so it is not balanced.

For D, theres a total of 6 H on the left side of the equation as there is (OH)3 and 3H, but none of the right side, so its not balanced.

C is the correct answer as

on the left side of the equation:

2 Al(OH)3 has 2Al, 6O, and 6H

on the right side of the equation:

Al2O3 has 2Al and 3O

3 H20 has 3H and 6O

this makes a total of 2Al, 6H and 6O, which is equal to the number of each element in the left side, thus it is balanced and is the right answer.

In the future for these type of qns, you want to add up the number of each element on the left, then the ride, and see compare the numver of element they have. if the number of all the elements on both sides are the same, the equation is balanced.

Answer:

because they are actually moving, or because they reflect our motion through space.

Explanation:

Stars making a circular motion across the sky is evidence of the earth's rotation.

This is because when the earth rotates it appears to us like the stars are moving.

Answer:

Iron metal is more reactive than copper.

Explanation:

Iron metal is more reactive than copper. ... Cu is less reactive than iron, therefore, cannot replace iron from iron sulphate (FeSO4). we have already seen that iron is more reactive than copper. So that means that in this reaction, copper is less reactive than iron. That means copper cannot displace iron. It cannot kick out iron from a sulfate.

Answer:

base is also known as alkaline

n sugar is not a base

Answer:

thanks for the points have a nice day :D

Explanation:

Answer:

A, B and C

Explanation:

The 7 rules of chemical change....

Gas Bubbles Appear. Gas bubbles appear after a chemical reaction has occurred and the mixture becomes saturated with gas. ...

Formation of a Precipitate. ...

Color Change. ...

Temperature Change. ...

Production of Light. ...

Volume Change. ...

Change in Smell or Taste.

Answer:

C

Explanation:

Answer:

the mass of an does not change with speed but changes when we add or cut a part of it.

Explanation:

Answer:

weight

Explanation:

Explanation:

A supersaturated solution is a solution that contains more than the maximum amount of solute that is capable of being dissolved at a given temperature. The recrystallization of the excess dissolved solute in a supersaturated solution can be initiated by the addition of a tiny crystal of solute, called a seed crystal.

Supersaturated solutions have much more dissolved solute as saturated solutions, and then they can dissolve greater solute than that of the solution can at a specific temperature.

Whenever the concentration of even a solute surpasses the concentration determined by the quantity equilibrium solubility, the chemical solution is said to be supersaturated.

.

A solution, which includes more than just the maximum quantity of solute that may be dissolved at a particular temperature is called a supersaturated solution. The injection of a microscopic crystal of solute, known as a seed crystal, can start the recrystallization of additional dissolving solute in a supersaturated solution.

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To solve such we need to know the concept behind significant figures. Addition, subtraction, multiplication and division follow the rules of significant figures. Therefore, the correct option is option A that is 7.95 g.

Significant figures of a number in positional notation are digits in the number that are reliable and necessary to indicate the quantity of something.

Rules for counting the significant figures are :

Zeroes before non zero digits are not significant

Zeros between non zero digits are significant.

Zeroes after non zero digits are not significant.

When we add two decimal numbers then, the final answer would be according to the number which have least significant number.

7.94 g + 0.0132 g = 7.95g

Since among 7.94 and 0.0132, 7.94  has the least significant numbers that is 3. So, answer should have 3 significant figures, answer will be 7.95.

Therefore, the correct option is option A that is  7.95 g.

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Answer:

leave little space between the molecules.

Explanation:

Matter is made up of small particles called molecules. These molecules present in matter are arranged inside its bulk.

In liquids and solids, the molecules are arranged very close together in such a way that there is only a little space between them. This is why liquids and solids are referred to as "condensed phases".

They are quite unlike gases where there is a lot of space between gas molecules.

Answer:

B

Explanation:

Answer:

white precipitates of PbSO4 will appear

Explanation:

Now let us first consider the reaction equation;

Na2SO4(aq) + Pb(NO3)2(aq) ---->2NaNO3(aq) + PbSO4(s)

So, if i mix solutions of sodium sulfate and lead II nitrate, stir it and allow it to stand for a couple of minutes, i will begin to see the appearance of white precipitates of PbSO4.

This follows from the solubility rules. Sulphates are soluble in water except those of group II ions, Pb^2+ and silver I ion.

Answer:

Chlorine has more mass than the other elements.

Explanation:

We can find the mass of each element using the following equation:

[tex] m = \eta*A [/tex]

Where:

η: is the moles

A: is the standard atomic weight

a) For carbon, we have:

[tex] m_{C} = \eta*A = 1 mol*12.011 g/mol = 12.011 g [/tex]

b) For oxygen, we have:

[tex] m_{O} = 1 mol*15.999 g/mol = 15.999 g [/tex]

c) For chlorine, we have:

[tex] m_{Cl} = 1 mol*35.45 g/mol = 35.45 g [/tex]

d) And for For hydrogen, we have:

[tex] m_{H} = 1 mol*1.008 g/mol = 1.008 g [/tex]

Therefore, chlorine has more mass than the other elements.  

I hope it helps you!          

Answer:

Anita did not make the track team this year, and she feels really disappointed and upset. What question would most likely redirect her thinking and provide a solution?

Why did this terrible thing happen to me?

What other sports can I try this spring?

Why does everything I attempt go wrong?

Why did Karen get on the team but I didn't?

Answer - What other sports can I try this spring?

Explanation:

Failures and successes are part of our daily lives as humans. It can be very challenging for one to accept his or her failures and bring oneself above it.

when failure occur, the best way to reverse the negative impacts it brings is to move forward and decide on what next to do.  

The actions that must be taken in the processes should be quite productive enough to bring back the results one desired.

When the effects of failures prove irreversible, one would then give the mind a diversion and help his or herself think their way though the failure that was encountered.

Answer:

Relative atomic mass = 35.5

Explanation:

Given data:

Abundance of Cl -35 = 75%

Abundance of Cl -25 = 25%

Average atomic mass = ?

Solution:  

Relative atomic mass = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass)  / 100

Relative atomic mass = (75×35)+(25×37) /100

Relative atomic mass =  2625 + 925 / 100

Relative atomic mass = 3550 / 100

Relative atomic mass = 35.5

3,1,2 should be the correct answer

Answer:

They want to escape from the fury of a hurricane.

Explanation:

Your welcomeeeeeeeeeeeee

Answer:

They want to escape from the fury of the hurricane

Explanation:

None of the other choices made sense. They are packing to leave.

Have a splendid day!