Two tanks are connected via a valve as shown in Fig. 5. Tank A contains 7kg of hydrogen at 27C and 50kPa. Tank B contains 4kg of hydrogen at 227C and 200kPa. Now the valve is opened, and the entire system is allowed to reach a thermal equilibrium with a final pressure of 84.62kPa. Assuming that the work interaction during this process is negligible, determine the heat transfer for this process. Figure 5: Two tanks connected via a valve (not to scale)