(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

An ideal monatomic gas is confined to a cylindrical container having a movable, yet "snuggly-fitting," lid that slides up and down to accommodate changes in pressure and volume. The diagram shown below, outlines the steps in a heat cycle starting at position A and moving through positions B, C, D and then back to A.

*ignore the axes labels*

PV diagram2

Given:

PA = PB = 12.0 atm

PC = PD = 6.0 atm

VA = VD = 5.0 m3

VB = VC = 30.0 m3

temperature of point C is 900 K

moles of gas are present 2437.3376

How much total heat is added during the cycle?

2. Relevant equations

Q=nCp delta T

Q=nCv delta T

PV=nRT

3. The attempt at a solution

I tried:

Q=Q+Q=nCp delta T+nCv delta T=2437.3376*20.78*150+2437.3376*12.47*1500

=53187581 J but this is wrong.

Why? and what is the actual answer?

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# Homework Help: Ideal monatomic gas engine problem

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