A girl throws a rock into a pond. A leaf floating on the pond bobs up and down but does not change location on the pond's surface. Why not?

Answers

Answer 1

Answer:

This is due to the difference in density. The rock is denser than the leaf. And also, the rock is denser than the liquid in the pond. If the material is denser than the other material, it will sink. The same holds true for the rock, it sinks. But when the material is less dense than the other material, it floats. And it holds true for the leaf, it floats.

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What causes the colors observed during a flame test

How different are the duck leeches offsprings from their parents

Answers

They are different because their appearance and general genology may differ greatly from the leeches parent.

Are the strengths of the interactions between the particles in the solute and between the particles in the solvent before the solute and solvent are combined greater than, less than, or equal to the strengths of the interactions between solute particles and solvent particles after dissolution? Explain.

Answers

Answer:

Less than

Explanation:

The process of dissolution occurs as a kind of "tug of war". On one side are the solute-solute and solvent-solvent interaction forces, while on the other side are the solute-solvent forces.

Only when the solute-solvent forces are strong enough to overcome the pre-mixing forces do they overcome the "tug of war", and thus dissolution occurs.

Thus, it is concluded that the interaction forces between solute particles and solvent particles before they are combined are less than the interaction forces after dissolution.

For the dissolution of the soluteparticles in the solvent particles, the force of attraction between the particles of solute and between the particle of solvent must be less than the interaction between the solute particles and solvent particles after dissolution.

In a solution the forces act between the solute molecules, solvent molecules, and solute-solvent molecules. For the dissociation to take place the bond between the solute and solvent has to be formed. The resultant will result in the dissolution of the solute in the solvent mixture. The strong solute-solute and solvent-solvent bond will result in difficulty in the formation of the solute-solvent bond, and the dissolution will not take place.

Thus for the dissolution of the solute particles in the solvent particles, the force of attraction between the particles of solute and between the particle of solvent must be less than the interaction between the solute particles and solvent particles after dissolution.

For more information about dissolution, refer to the link:

brainly.com/question/9949108

Does salt affect how long an ice cube melts?I am just talking about normal salt, not special salt (if that exists).

Answers

Answer:

Ice cubes with salt melt faster. When you add salt, it dissolves in the water of the ice cube. The freezing temperature of salt water is 32 degrees Fahrenheit lower than that of fresh water.

What pressure in atmospheres(atm) is equal to 45.6 kPa?

Answers

1 kpa = 0.0098692327 atm so just multiply that by 45.6

All scientists observing the same event will record identical descriptions.

Answers

TRUE OR FALSE
always find the important keyword in this case IDENTICAL which means: similar in every detail; exactly alike.
FALSE because scientists all have different ways of thinking and they might observe things from a different perspective.

Answer:

FALSE

Explanation:

i got it right

Trends in the periodic table indicate that the element with the greatest ionization energy is in which of the following periods and groups?a
Period 2, Group 1
b
Period 7, Group 2
c
Period 6, Group 17
d
Period 1, Group 18

Answers

Answer:

D Period 1, Group 18

Explanation:

it's helium

it's top right corner of the periodic table

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