CHEMISTRY MIDDLE SCHOOL

PLEASE HELP WILL GIVE BRAINLIEST

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Answer 1

Answer:

Answer:

I think It's either A. or C.

Explanation:

Answer 2

Answer:

Answer:

Explanation:

Related Questions

particles that have enough energy to break free from each other and move around freely and spread out from each other is a gas or liquid?
After cloud droplets form, what must happen to them for precipitation to occur?
When are tides highest? a. during the moon’s first quarter phase b. when the sun, Earth, and the moon are nearly in a line c. during the moon’s third quarter phase d. when the moon is at a right angle to the sun
EADY QUESTION WORTH 50PTS
prairie dogs are not dogs. jellyfish are not fish. How do you think using scientific names instead of common names help prevent misconceptions?

Which type of seismic waves produces the most severe ground movement?

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The surface waves are the type of seismic waves that produce the most severe ground movement. This wave is slow in nature and so produces a rolling effect similar to a surface wave in a pond. This kind of wave is far more devastating than the P waves and the S waves. The surface waves have the capacity to shake a building from side to side until it collapses. This kind of wave moves in a pattern similar to a circle. It actually originates at a point and then start moving outwards in a circle.

In which sample of water do the water particles have more energy : 5grams of ice cubes at -10 C, or 5 g of liquid water at 20 C? How do you know?

Answers

Answer: 5 grams of liquid water at 20°C will have more energy.

Explanation:

Kinetic energy is the measure of temperature of the system.

The equation used to calculate kinetic energy of a particle follows:

$E=(3)/(2)kT$

where,

E = kinetic energy of the particles

k = Boltzmann constant = $1.38* 10^(-23)J/K$

T = temperature of the particle

From the above relation, it is visible that kinetic energy is directly related to the temperature of the system.

If the temperature of the particles is high, it means that the particles will have more energy.

We are given:

5 grams of ice cubes at -10°C

5 grams of liquid water at 20°C

So, the temperature of water particles is more than the temperature of ice cube.

Hence, 5 grams of liquid water at 20°C will have more energy.

5 g of liquid water at 20 C because liquids have a higher kinetic energyand the temperature is higher than that of the ice cubes

What happens before the nucleus of the parent cell has divided into two new nuclear

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Before I get to the answer, I would recommend that you post biology questions under the biology category. You should get your answers more quickly that way :)
There are two things that happen before a parent cell divides:
1) DNA in the nucleus of the parent cell must replicate (this happens in the S phase of the cell cycle). If you're looking for a single answer to your question, then this is probably it.
2) Also, the cell must grow and some organelles (like the mitochondria) must also replicate before the parent cell divides. If organelles like the mitochondria did not replicate, then you would eventually end up with daughter cells that don't have enough mitochondria to support themselves.

How many double bonds are in an alkane?

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None
Alkanes only have single bonds

Final answer:

Alkanes are hydrocarbons with only single bonds between the carbon atoms, therefore, they do not contain any double bonds.

Explanation:

In chemistry, an alkane is a type of hydrocarbon where all of the carbon-carbon bonds are single bonds, meaning they share just one pair of electrons. Double bonds share two pairs of electrons and are typically found in alkenes, a different type of hydrocarbon. Therefore, an alkane does not have any double bonds.

Learn more about Alkanes here:

brainly.com/question/35822742

#SPJ6

One balloon was only partly filled when put on the plane. During the flight, the balloon volumeincreased from 7 L at 1.0 atm to 9 L. What was the cabin pressure on the airplane during the flight?
(Assume the balloon stretched very easily and the temperature was constant.)

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Answer:

P₂ = 0.8 atm

Explanation:

Given data:

Initial pressure = 1 atm

Initial volume = 7 L

Final volume = 9 L

Final pressure = ?

Solution:

P₁V₁ = P₂V₂

P₁ = Initial pressure

V₁ = Initial volume

P₂ = Final pressure

V₂ = Final volume

Now we will put the vales in formula.

P₁V₁ = P₂V₂

P₂ = P₁V₁ /V₂

P₂ = 1 atm × 7 L / 9 L

P₂ = 7 atm. L / 9 L

P₂ = 0.8 atm

what is a measure of the amount of matter in an object while what is a measure of the force of gravity acting on an object

Answers

a measure for the amount of matter in an object would be grams or kilograms.
the measure of the force of gravity acting on an object would be newtons.

the amount of matter in an object is called mass.
the force of gravity acting upon an object would be called weight.