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i. A hand mixer with a power equals 165W is used to mix1kg of a dough for 5 minutes. How much the temperature of dough increase if 65% of the mixer power was transferred T=?, as internal energy into the dough (dough heat capacity =4.2kJ/kg/K ) ii. Liquid water at 180C and 1003kPa has an internal energy of 762kJ/kg and a specific V volume of 0.001128m3/kg. If the water is brought to the vapor state at 300C and 1500P kPa, where its internal energy is 2784.4kJ/kg and its specific volume is 0.17m3/kg,V2 W=PV1B2H1=762+10030.001128=763.13kH2=2784.4+15000.17=3039.4 48 H=U+(Pv)H=3802.533802.53=U1329.48 iii. One kilogram of air is heated reversibly at constant pressure from an initial state of 300 K and 1 blar until its volume riples. Calculate W, Q,U, and H. ( R=83.14 bar. cm3/mol.K,Cp=29J/mol,K )