Pleas help with my Chemistry Question?

Posted on 2016-02-16 17:19:00 in Chemistry by RYAN

Consider a sample containing 2.00 mol of a monatomic ideal gas that undergoes the following changes from State A to State D: 
State A PA=11.0atm, VA=14.00L --> State B PB=11.0atm, VB=5.00L 
-->State C PC=22.0atm, VC=5.00L 
-->State D PD=22.0atm, VD=20.50L 
Assume that the external pressure is constant during each step and equals the final pressure of the gas for that step. 

What is the value of q for the overall change from State A (through States B and C) to State D? 

What is the value of w for the overall change from State A (through States B and C) to State D? 

What is the value of ΔE for the overall change from State A to State D? 

What is the value of ΔH for the overall change from State A to State D?

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