please answer everything correctly

1. The following data was obtained form the cooling of an iron cube (2cm x 2cm x 2cm) with surrounding temperature of 27.1 with forced air. Time T (C) 0 329 13 149 73 117 133 97 193 81 253 70 313 62 373 55 433 49 Given that the properties of iron is as follows: Density (kg/m) 7874 Heat capacity (J/kg.K) 462 Thermal Conductivity (W/m.K) 94 Calculate the heat transfer coefficient from the data and identify whether lumped system analysis can be applied to the system. Show your complete solution. 2. Sulfation roasting of 1 g of ZnS at elevated temperature. Suppose the final product weighs 1.2 grams, calculate the degree of transformation (in percent) of the feed material. Assume that sulfation reaction is the only occurring reaction in the process: ZnS + 2O2(g) -> ZnSO4(s) Show your complete solution