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BlackZzzverrR [31]
4 years ago
8

Name two fluid technologies that make use of water

Chemistry
2 answers:
labwork [276]4 years ago
6 0
I googled it and someone said fire extinguisher and a refridgerator ...
polet [3.4K]4 years ago
3 0

Answer:

Fire extenguisher and refrigerator

Explanation:

Refrigerator : There are 5 basic components in refrigeration I.e. fluid refrigerant, a compressor which controls the flow of refrigerant; the condensor coil( on the outside of the fridge), evaporation coils( on the inside of the fridge) and something calls an expansion device.

  1. The compressor constricts the refrigerant vapour,raising its pressure and pushes it in the coils on the outside of the refrigerator.
  2. When the hot gas in the coils meets the cooler air temperature of the kitchen it becomes a liquid.
  3. Now in the liquid form at high pressure, the refrigerant cools down as it flows into the coils inside the freezer and the fridge.
  4. The refrigerant absorbs the heat inside the fridge cooling down the air.
  5. Last the refrigerant evaporates to a gas then flows back to the compressor where the cycle starts all over.

Fire Extinguishers: Water performs two functions; its conversion tosteam absorbs the heat, and the steam displaces the air from the vicinity of the flame. Many siimple fire extinguishers  are quipped with hand pumps or sources of compressed gas to propel water through the nozzle.

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Consider the reaction. CaCl2(aq)+K2CO3(aq)⟶CaCO3+2KCl. Identify the precipitate, or lack thereof, for the reaction. (A) KCl (B)
Natali5045456 [20]

<u>Answer:</u> The correct answer is Option B.

<u>Explanation:</u>

Precipitate is defined as insoluble solid substance that emerges when two different aqueous solutions are mixed together. It usually settles down at the bottom of the solution after sometime.

For the given chemical equation:

CaCl_2(aq.)+K_2CO_3(aq.)\rightarrow CaCO_3(s)+2KCl(aq.)

The products formed in the reaction are calcium carbonate and potassium chloride. Out of the two products, one of them is insoluble which is calcium carbonate. Thus, it is considered as a precipitate.

Hence, the correct answer is Option B.

4 0
4 years ago
Maggie is solving a chemistry riddle her clue is to take the number of valence electrons in halogens and subtract it by the numb
Novay_Z [31]

The answer to the riddle Maggie is solving is 6

To determine the answer to the riddle Maggie is solving,

We will subtract the number of valence electrons in halogens by the number of valence electrons in alkali metals.

First, let us define what is meant by valence electrons

Valence electrons are those <em>electrons </em>that reside in the outermost shell surrounding an atomic nucleus.

Now, we will the determine the respective number of valence electrons in halogens as well as the number of valence electrons in alkali metals.

<em>For Halogens</em>

Halogens are the group 17 (group 7A) elements in the periodic table. Examples are Fluorine, Chlorine, Bromine etc.

Halogens have 7 electrons in their outermost shell

<em>For Alkali metals</em>

Alkali metals are the group 1 metals. Examples are Lithium, Sodium, Potassium etc.

Alkali metals have 1 electron in their outermost shell

Now, for the answer to the riddle,

Answer to the riddle = Number of valence electrons in halogens - Number of valence electrons in Alkali metals

\

Answer to the riddle = 7 - 1

∴ Answer to the riddle = 6

Hence, the answer to the riddle Maggie is solving is 6

Learn more here: brainly.com/question/9392364

6 0
3 years ago
Please help I need the answer by today and it is very important! Which of the following statements best describes why the mass o
Juliette [100K]

D, because matter does not change in space but unlike gravity, which changes, matter, is the mass of it, which will stay the same unless there is a chemical change or, physical change, but not in this case, so the answer you are looking for is D. hope this enlarged your understanding and knowledge.

6 0
3 years ago
Anota una alternativa o solución que se pueda realizar para evitar la escasez de agua:
Olin [163]

Answer:

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3 0
3 years ago
Which points of Dalton's atomic theory is supported by these findings?
Sauron [17]
Dalton's Theory:
1. all elements is composed of very small particles called atoms 
<span>2. Atoms of a given element are identical in size, mass, and other properties; atoms of different elements differ in size, mass, and properties. </span>
3. atoms cannot be divided, created, or destroyed
<span>4. Atoms of different elements combine in simple whole number ratios to form chemical compounds </span>
<span>5. In chemical reactions, atoms are combined, separated, or rearranged.
</span>So as we can see; the first two sentences are correct while the third sentence not supported in the theory
4 0
3 years ago
Read 2 more answers
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