Quiz 2a_solution_

Quiz 2a_solution_ - P7A Quiz 2a DL Sec Name(last(first...

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P7A Quiz 2a DL Sec ___ Name ( last ) _______________________ ( first ) ____________________ |__|__|__| Student ID _________________________ first 3 letters last name I certify by my signature that I will abide by the code of academic conduct of the University of California. Signature ________________________________________ NOTE: As always, you will be graded on the quality of your response. Formulas and data table on back Rubric Codes: 1. ½ kg of very hot ammonia (90 C⁰) is added to 3.3kg of ethanol at room temperature. The new mixture is allowed to come to equilibrium in a sealed container: Substance Specific Heat (kJ/kg*K⁰) Mass (kg) Initial Temperature (C⁰) Ammonia 4.7 0.5 90 Ethanol 2.44 3.3 23 There are no phase changes involved and you may assume no heat enters or leaves the container. Find the final temperature of the mixture. You must show your work for credit. Δ E th (Ammonia) + Δ E th (Ethanol) = 0 (0.5)(4.7)(T f -90)+(3.3)(2.44)(T f -23)=0 2.35T f -211.5+8.052T f -185.196=0
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Quiz 2a_solution_ - P7A Quiz 2a DL Sec Name(last(first...

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