10. Calculate the latent heat of vaporization of ammonia at 40°C using the following data from the saturation table of ammonia. t(°C) 30 35 40 45 50 p(bar) 11.67 13.5 15.54 17.82 20.33 v₁(kg 1.68 1.7 1.73 1.75 1.78 v₂ kg 0.11 0.095 0.083 0.073 0.063

Steam, initially at 700 lbf/in.2, 550°F undergoes a polytropic process in a piston-cylinder assembly to a final pressure of 2900 lbf/in.² Kinetic and potential energy effects are negligible. Determine the heat transfer, in Btu per lb of steam, for a polytropic exponent of 1.4, (a) using data from the steam tables. (b) assuming ideal gas behavior. Part A * Your answer is incorrect. Determine the heat transfer, in Btu per lb of steam, using data from the steam tables. Q/m=i 119.5 Btu/lb

What temperature does the first solid form for a 20% wt% Sn-80% Pb. T(°C) 300 200 100+ Answer: 0 α L+a 18.3 20 Pb-Sn system L (liquid) 183°C 61.9 a + ß 60 C, wt% Sn L+BB 97.8 80 100

I cant figure these out please help