Part 1: An NO standard containing 100 mL/m3 is to be used to calibrate an analyzer. If the flow from the standard tank is set to 200 mL/min, and the flow of zero air is 300 mL/min, what concentration of NO is produced? Part 2: The analyzer gives a reading of 40.0 mL/m3 for NOx when the above standard is passed through it. When the ozone generator in the dilution system is turned on, the NO reading drops and the NOx reading is 39.2 mL/m3. What is the efficiency of the converter?

A container contains 600 kg solution which includes 6% sugar. It is homogeneously stirred. Another solution which includes 15% sugar is entering the container at 1000 kg/h constant flow rate. At the same time, it is also started a constant withdrawal rate at 700 kg/h. Derive an equation that relates the concentration of outlet withdrawal as a function of time. Calculate the concentration after 1.5 hours as well.

10. A container is separated into two halves by a membrane. Your lab partner assistant, Thurmond, is supposed to place a MgCl2 solution on side 1 and a NaCl solution on side 2. He is then supposed to measure the rate of water movement across the membrane. Unfortunately, Thurmond is not very good about keeping complete lab notes and he has forgotten to write down some data and calculations. Using your knowledge of osmosis, complete the following table. Temperature is 15°C and the hydraulic conductivity for the membrane is 0.4 ml/atm sec. MgCl2 Concentration on Side 1 NaCl Concentration on Side 2 80 mM Osmolarity on Side 1 Osmolarity on Side 2 Difference in osmotic pressure 60 mosM across the membrane Jy 0.95 ml/sec Reflection coefficient (ơ) Direction of water movement

A feed of a distillation column contains 40 mol% of n-pentane and 60 mol% of n-hexane will be separated to recover 92 mol% of n-pentane as distillate at the column condition of 1 atm. The column receives a saturated liquid feed with a flow rate of 1,200 kmol/h. A total condenser is used and reflux is a saturated liquid. Bottoms from the column contains 94 mol% of n-hexane from the feed. The carbon steel column is equipped with carbon steel sieve trays which have efficiency of 43%. Determine the design specifications of the distillation column using the appropriate heuristics. Hint: You need to find densities for vapour of distillate by using the chemical engineering principles that you have learnt. Use data in Table 2 and equation below to determine relative volatility of component.

ASsume that you are in a room of 35 m3 volume where 50 smokers are lighting up cigarettes at an average of 2 cigarettes per hour. Calculate the air ventilation rate required to prevent the formaldehyde concentration from exceeding 0.03 ppm. Assume 5 microgram of formaldehyde per cigarette.