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3 years ago

How does evaporation work

1 answer:

7 0

Evaporation is part of the water cycle and is the process of a liquid becoming a gas or vapor.

For evaporation to work, there has to be some sort of heat from the surface. This heat is known as <span>latent heat. Evaporating water removes surface heat. By removing the surface heat, it lowers the temperatures and water levels, whether it's on land or a body of water.

The only reason it doesn't build and stay in the atmosphere is because of condensation and precipitation.

Hope this helps!</span>

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Each period in the periodic table corresponds to a

Rudiy27

Each correspond to a principal energy level

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3 years ago

Read 2 more answers

Choose ALL TRUE statements about calorimetry from the choices below:

Ostrovityanka [42]

Answer:

True statment

2) Styrofoam would make a good calorimeter

3) Insulating material would make a good calorimeter

Explanation:

The calorimeter is one which is insulated that is which will not absorb or let the heat to escape from it. the calorimeter is used to measure the heat change during a process so if it will allow to exchange heat with surrounding it will deviate the readings or observence.

Copper is a good conductor of heat so we cannot use it make a calorimeter.

Hence

1) Copper would make a good calorimeter : False

2) Styrofoam would make a good calorimeter: True

Styrofoam is a bad conductor or insulator so it can be and it is used for calorimeter.

3) Insulating material would make a good calorimeter : True

4) A good calorimeter should easily absorb heat : false

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3 years ago

What is the percentage yield of O2 if 12.3 g of KClO3 (molar mass 123 g) is decomposed to produce 3.2 g of O2 (molar mass 32 g)

My name is Ann [436]

Answer:

The percentage yield of O2 is 66.7%

Explanation:

Reaction for decomposition of potassium chlorate is:

2KClO₃ → 2KCl + 3O₂

The products are potassium chloride and oxygen.

Let's find out the moles of chlorate.

Mass / Molar mass = Moles

12.3 g / 123 g/mol = 0.1 mol

So ratio is 2:3, 2 moles of chlorate produce 3 mol of oxygen.

Then, 0.1 mol of chlorate may produce (0.1 .3)/ 2 = 0.15 moles

Let's convert the moles of produced oxygen, as to find out the theoretical yield.

0.15 mol . 32 g/ 1mol = 4.8 g

To calculate the percentage yield, the formula is

(Produced Yield / Theoretical yield) . 100 =

(3.2g / 4.8g) . 100 = 66.7 %

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4 years ago

Which statement describes a chemical property that many elements might share?

nata0808 [166]

ANSWER:

I think its B.

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4 years ago

The yellow beams in the model represent equal amounts of radiation coming from the Sun.

Yuki888 [10]

Answer:

C and D

Explanation:

It is right because i did a quiz and i got c and d right hope this helps:)

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3 years ago