Thermodynamics B/C

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photolithoautotroph
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Re: Thermodynamics B/C

Postby photolithoautotroph » April 29th, 2018, 6:28 pm

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 April 30th, 2018, 3:48 am, edited 1 time in total.
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Re: Thermodynamics B/C

Postby UTF-8 U+6211 U+662F » April 29th, 2018, 6:58 pm

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 » May 2nd, 2018, 5:55 pm

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 May 5th, 2018, 5:58 pm, edited 1 time in total.

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Re: Thermodynamics B/C

Postby MattChina » May 5th, 2018, 7:54 am

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 » May 5th, 2018, 5:58 pm

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 » May 7th, 2018, 7:23 pm

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 » May 9th, 2018, 1:30 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 » May 9th, 2018, 5:57 pm

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 » May 10th, 2018, 12:20 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 » May 13th, 2018, 3:46 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 » May 28th, 2018, 9:37 am

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 » May 28th, 2018, 4:36 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 » May 28th, 2018, 4:51 pm

Yep, your turn.

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Re: Thermodynamics B/C

Postby MattChina » June 10th, 2018, 11:19 am

Questions!
What is the common heat engine cycle used for most power plants?
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Re: Thermodynamics B/C

Postby UTF-8 U+6211 U+662F » June 20th, 2018, 3:41 pm

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

Answer?
Rankine


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