1.

If_the_amount_of_heat_given_to_a_system_is_35_J_and_the_amount_of_work_done_by_the_system_is_-15J_and_the_amount_of_work_done_by_the_system_is_-15J,_then_the_change_in_the_internal_energy_of_the_system_is$

A. -50J
B. 20J
C. 30
D. 50J
Answer» E.


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