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4. What is the change in internal energy of a system which
does 4.50x10° Jof work while 3.00×10° Jof heat
transfer occurs into the system, and 8.00×10 Jof heat
transfer occurs to the environment?

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Given,

system does work of $4.50 \times 10^{5} J$ , heat transfer into the system is $3.00 \times 10^{6} J$ and $8.00 \times 10^{6} J h e a t i s t r a n s f e r t o e n v i r o n m e n t$

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