# ارجو منكم مساعدتي في حل اسايمنت

#### alshoq

##### عضو جديد
 Q1) [FONT=Arial,Arial][FONT=Arial,Arial]An old fashioned jar contains a patent medicine. The neck is closed with a rubber stopper that is 12 mm tall with a diameter of 3 mm. The molar concentration of medicine vapor is 2.5 x 10 [/FONT][/FONT][FONT=Arial,Arial][FONT=Arial,Arial]-3 [/FONT][/FONT][FONT=Arial,Arial][FONT=Arial,Arial]kmol/m[/FONT][/FONT][FONT=Arial,Arial][FONT=Arial,Arial]3 [/FONT][/FONT][FONT=Arial,Arial][FONT=Arial,Arial]at the bottom surface and negligible at the top surface. If the mass diffusivity of the medicine vapor in air is 0.2 x 10[/FONT][/FONT][FONT=Arial,Arial][FONT=Arial,Arial]-9 [/FONT][/FONT][FONT=Arial,Arial][FONT=Arial,Arial]m[/FONT][/FONT][FONT=Arial,Arial][FONT=Arial,Arial]2[/FONT][/FONT][FONT=Arial,Arial][FONT=Arial,Arial]/s , find the rate at which the vapor exists through the stopper. [/FONT][/FONT] [15] Q2) [FONT=Arial,Arial][FONT=Arial,Arial]Using any software tool , estimate the boiling point temperature for a liquid mixture of n-heptane (A) and n-hexane (B) where the composition of A is 15 mole % and the pressure is 100kPa. [/FONT][/FONT] [15] Q3) [FONT=Arial,Arial][FONT=Arial,Arial]A packed tower is used to purify a gas containing 14 mole % of H[/FONT][/FONT][FONT=Arial,Arial][FONT=Arial,Arial]2[/FONT][/FONT][FONT=Arial,Arial][FONT=Arial,Arial]S. The total inlet gas flow to the tower is 80 kmol/h and the total inlet pure solvent flow to be used to absorb the H[/FONT][/FONT][FONT=Arial,Arial][FONT=Arial,Arial]2[/FONT][/FONT][FONT=Arial,Arial][FONT=Arial,Arial]S is 120 kmol /h. The outlet gas stream is to have 3 % by volume of Hydrogen Sulphide.The process is to operate isothermally at 300 K and a total pressure of 101.3 kPa. a) Derive the operating line equation, b)Calculate the concentration of liquid solution leaving the column as mass percent given that mol wt of solvent is 24 kg/kmole, mol wt of H[/FONT][/FONT][FONT=Arial,Arial][FONT=Arial,Arial]2[/FONT][/FONT][FONT=Arial,Arial][FONT=Arial,Arial]S is 34 kg/kmole c) Calculate the percentage recovery of Hydrogen Sulphide [/FONT][/FONT] [10] Q4) [FONT=Arial,Arial][FONT=Arial,Arial]Discuss the effects of Corrosion in the industry. Identify methods to measure extent of corrosion in the lab. [/FONT][/FONT]