Thermodynamics B/C

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Re: Thermodynamics B/C

Postby photolithoautotroph » Mon Apr 30, 2018 1:28 am

MattChina wrote:
UTF-8 U+6211 U+662F wrote:
acidbeaker wrote:2.50 L of gas originally at 60 ̊C is warmed to 145 ̊C.

1. What is the new volume if the pressure remains constant?
2. Who named this law?

Answer
1) 1.99 L
2) Jacques Charles if you mean who the law was named after

Shouldnt the gas expand?

It should expand. I get 3.14L but there is technically only one significant figure because of 60C. So it would be 3L
Last edited by photolithoautotroph on Mon Apr 30, 2018 10:48 am, edited 1 time in total.
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Re: Thermodynamics B/C

Postby UTF-8 U+6211 U+662F » Mon Apr 30, 2018 1:58 am

MattChina wrote:
UTF-8 U+6211 U+662F wrote:
acidbeaker wrote:2.50 L of gas originally at 60 ̊C is warmed to 145 ̊C.

1. What is the new volume if the pressure remains constant?
2. Who named this law?

Answer
1) 1.99 L
2) Jacques Charles if you mean who the law was named after

Shouldnt the gas expand?

Yeah, whoops
1) 3.14 L

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Re: Thermodynamics B/C

Postby UTF-8 U+6211 U+662F » Thu May 03, 2018 12:55 am

Just going to ask the next question..

5 moles of a monatomic ideal gas isobarically and adiabatically contract by 1.5 L, changing from 100 degrees Celsius to 80 degrees Celsius. Find the final volume and pressure of the gas.
Last edited by UTF-8 U+6211 U+662F on Sun May 06, 2018 12:58 am, edited 1 time in total.

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Re: Thermodynamics B/C

Postby MattChina » Sat May 05, 2018 2:54 pm

UTF-8 U+6211 U+662F wrote:Just going to ask the next question..

5 moles of a monatomic ideal gas isobarically and adiabatically expand by 1.5 L, changing from 100 degrees Celsius to 80 degrees Celsius. Find the final volume and pressure of the gas.

answer
554.3 bars and 26.48 liters
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Re: Thermodynamics B/C

Postby UTF-8 U+6211 U+662F » Sun May 06, 2018 12:58 am

MattChina wrote:
UTF-8 U+6211 U+662F wrote:Just going to ask the next question..

5 moles of a monatomic ideal gas isobarically and adiabatically expand by 1.5 L, changing from 100 degrees Celsius to 80 degrees Celsius. Find the final volume and pressure of the gas.

answer
554.3 bars and 26.48 liters

Sorry, you're right, it should be contract, not expand :|
Edited the original post to clarify.

Your turn!

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Re: Thermodynamics B/C

Postby MattChina » Tue May 08, 2018 2:23 am

What is the heat energy required to completely vaporize 110g of water beginning at 0°C? (The heat capacity of water is 4.2 J/g⋅K and the ΔH
vaporization of water is 2260 kJ/kg
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Re: Thermodynamics B/C

Postby UTF-8 U+6211 U+662F » Wed May 09, 2018 8:30 pm

MattChina wrote:What is the heat energy required to completely vaporize 110g of water beginning at 0°C? (The heat capacity of water is 4.2 J/g⋅K and the ΔH
vaporization of water is 2260 kJ/kg

Answer

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Re: Thermodynamics B/C

Postby MattChina » Thu May 10, 2018 12:57 am

UTF-8 U+6211 U+662F wrote:
MattChina wrote:What is the heat energy required to completely vaporize 110g of water beginning at 0°C? (The heat capacity of water is 4.2 J/g⋅K and the ΔH
vaporization of water is 2260 kJ/kg

Answer


Yep, sounds about right
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Re: Thermodynamics B/C

Postby UTF-8 U+6211 U+662F » Thu May 10, 2018 7:20 pm

All right! When heat flows through a wall, what kind of process is that?

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Re: Thermodynamics B/C

Postby MattChina » Sun May 13, 2018 10:46 pm

UTF-8 U+6211 U+662F wrote:All right! When heat flows through a wall, what kind of process is that?


a flow process?
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Re: Thermodynamics B/C

Postby UTF-8 U+6211 U+662F » Mon May 28, 2018 4:37 pm

Was looking for
Diathermic, but I guess I could've been more specific with the question


The zeroth law of thermodynamics allows us to define what quantity?

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Re: Thermodynamics B/C

Postby MattChina » Mon May 28, 2018 11:36 pm

UTF-8 U+6211 U+662F wrote:
Was looking for
Diathermic, but I guess I could've been more specific with the question


The zeroth law of thermodynamics allows us to define what quantity?

temperature
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Re: Thermodynamics B/C

Postby UTF-8 U+6211 U+662F » Mon May 28, 2018 11:51 pm

Yep, your turn.

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Re: Thermodynamics B/C

Postby MattChina » Sun Jun 10, 2018 6:19 pm

Questions!
What is the common heat engine cycle used for most power plants?
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