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boyakko [2]
4 years ago
6

Write the electron configuration (ground and excited states) for element with atomic number 16 ?

Chemistry
1 answer:
Talja [164]4 years ago
3 0
2, 8,6 because it has to be in a configuration of 2,8,8
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I need your help.
adoni [48]

Answer:

I think c

Explanation:

4 0
3 years ago
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This is the star at the center of the solar system around which the earth and other matter orbit
Fynjy0 [20]

The answer is the Sun.

Thank you

8 0
3 years ago
What is a result of the unequal electron sharing in a water molecule?
Katarina [22]

Answer:

The right choice is  c. Water molecules have a weakly positive hydrogen end.

Explanation:

The unequal sharing of electrons in water molecule gives a slight negative charge near its oxygen atom ( see image below) and a slight positive charge near its hydrogen atoms. A neutral molecule that has a partial positive charge at one end and a partial negative charge at the other, it is a polar molecule.

so

a. Water molecules have a nonpolar bond.

It is wrong choice because water has polar bond .

b. Water molecules have a weakly positive oxygen end.  

Also, a wrong choice due to water molecule gives a slight negative charge near its oxygen atom.

c. Water molecules have a weakly positive hydrogen end.  

This is the right choice.

d. Water molecules have two oxygen and two hydrogen atoms

It is wrong choice because water has one oxygen and two hydrogen atoms

<u>So, the right choice is</u>

c. Water molecules have a weakly positive hydrogen end.  

4 0
4 years ago
Maximum heat transfer in heat exchanger happend in :
Elina [12.6K]

Answer:

b) Counter current

Explanation:

In mechanical, chemical, nuclear and other systems, it happens that heat must be transferred from one place to another or from one fluid to another. Heat exchangers are the devices that allow you to perform this task  the types of exchangers are presented  of heat as a function of flow: parallel flow; <u>counterflow</u>; cross flow.

Among the main reasons why exchangers are used

Heat are as follows:

• Heat a cold fluid using a fluid with a higher temperature.

• Reduce the temperature of a fluid by means of a fluid with a lower temperature.

• Bring the fluid to the boiling point using a fluid with a higher temperature.

• Condense a fluid in a gaseous state by means of a cold fluid

A backflow occurs when the two fluids flow in the same direction but in  opposite way. Each of the fluids enters the exchanger through different ends Since the fluid with less  temperature goes backflow from the heat exchanger at the end where the fluid enters with higher temperature,  the temperature of the coldest fluid will approach the temperature of the inlet fluid.

This type of exchanger  turns out to be more efficient than the other two types mentioned above. In contract with the exchanger  parallel flow heat, the counterflow exchanger may have the highest temperature in the cold fluid and the  lower temperature in the hot fluid after heat transfer in the exchanger.

<em> Be careful with </em><u><em>turbulent</em></u><em> that it is not a type of exchanger but a system in which a fluid is found.</em>

6 0
3 years ago
A substance absorbed 895 J and caused its temperature to increase by 10 ºC. If the substance has a mass of 27.9 g, what is the s
Irina18 [472]

Answer:

i dont get the equation sorry wish i can help

5 0
3 years ago
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