Crude Oil of 36 API degree at the stage of refinery,What was its Sp Gr

An extraction experiment was carried out with the soxhlet extraction technique to obtain oil from a plant seed. In the experiment, 10 g of plant seeds were taken and extracted with 150 mL of hexane solvent. The oil-hexane mixture obtained at the end of the extraction will be separated in the rotary evaporator Jand the mass and percent extraction efficiency of the collected oil will be calculated. The data obtained at the end of the experiment are given in the table below. Accordingly, calculate the amount of oil obtained, the amount of oil obtained per 1 g of plant seed and the percent extraction efficiency by establishing la mass conservation balance around the rotary evaporator. Weighing result (g) The tare of the sampled balloon 35 Initial mass (balloon + solvent + oil) 88.13 Tare the balloon in which the solvent was collected 45 93.47 At the end of the experiment, the balloon + solvent mass in which the solvent is collected

- The wall of a steel tank containing aerated water is corroding at rate 55 mdd 1-How long the time will it take for the wall thickness to decreases by 0.8 mm. 2- What rate corrosion in mpy? p of Fe= 7.87 g/cm³

An aqueous solution feed of 1,000 kg/h of 29 wt% acetone is to be multistage countercurrent extracted with pure MIK to reduce the acetone concentration to 5.0 wt% in the final raffinate. Determine the number of theoretical stages necessary when using 2,500 kg/h of solvent. Calculate diameter and height of the tower considering 50% flooding speed, 60% efficiency and Norton Intalox 3T packaging.