A$)$ What is the enthalpy of carbon dioxide entering the heat exchanger in stream A $($J$/$mol$)?$

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B$)$ What is the enthalpy of carbon dioxide exiting the heat exchanger in stream A $(\frac{J}{m}ol)?$

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C$)$ What is the enthalpy of nitrogen gas entering the heat exchanger in stream B $($J$/$mol$)?$

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D$)$ What is the enthalpy of nitrogen gas exiting the heat exchanger in stream $B(\frac{J}{m}ol)?$

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E$)$ Using an energy balance, what is the molar ratio of stream B to stream A$?$