How Is Energy Calculated for a Temperature Increase in Neon Gas?

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To calculate the energy required for a 12 K temperature increase in 180 g of neon gas, use the formula Q = m.c.dT, where m is the mass (180 g), c is the specific heat capacity of neon, and dT is the temperature change (12 K). The specific heat capacity value for neon can be found in reference tables. Additionally, the discussion includes constructing PV diagrams for two different gas processes: one involving isobaric compression and isothermal expansion, and another with cyclic processes. Lastly, the highest possible exhaust temperature for an engine with 27% efficiency operating at 420°C can be determined using thermodynamic principles. The thread focuses on applying these concepts to solve the posed questions.
truckerron1
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i have 3 questions that i need help with

Consider 180 g of neon gas. How much energy would it have to absorb to experience a temperature increase of 12 K?

Construct a PV diagram for each of the following. (a) A gas begins with a volume of 14 L under pressure of 3 atm. The gas first undergoes an isobaric compression to a volume of 6 L. Next, the gas experiences an isothermal expansion back to a volume of 14 L. (b). A gas undergoes a cyclic process consisting of two isochoric processes and two isobaric processes.

A particular engine having efficiency 27% operates at temperature 420C. What is its highest possible exhaust temperature?

thanks ron
 
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I will just help you with the first question.
Consider this formula:

Q = m.c.dT

m= 180 g
c= ? -> you have to check on a table
dT = 12 K

Now, it's up to you. :biggrin:
 
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