The art of being a good chemical engineer is being able to quickly understand relationships between various phenomena. We oftentimes compare process variables (flow rate, temperature, pressure, etc.) to develop a mathematical understanding of a particular situation. Reactant concentration versus time, distillation pressure versus distillate (or bottoms) composition, and inlet flow rate versus outlet stream temperature of a heat exchanger are just a few of these. In gas chromatograph (GC), the GC converts a signal output (usually in mV) into a peak area. Calibration curves are made by testing the peak areas for different concentrations of a mixture and then fitting those areas to a linear expression. Using linear regression, develop the calibration curve for this dataset of various concentrations for monoethanolamine in toluene. DONT USE EXCEL. hand written solution and graph only. Peak Area Conc, mg/L 0.05 0.03 5 0.13 7.5 0.25 10 0.33 12.5 0.35 15 0.44

Problem #1: The art of being a good chemical engineer is being able to quickly understand relationships between various phenomena. We oftentimes compare process variables (flow rate, temperature, pressure, etc.) to develop a mathematical understanding of a particular situation. Reactant concentration versus time, distillation pressure versus distillate (or bottoms) composition, and inlet flow rate versus outlet stream temperature of a heat exchanger are just a few of these. In gas chromatograph (GC), the GC converts a signal output (usually in mV) into a peak area. Calibration curves are made by testing the peak areas for different concentrations of a mixture and then fitting those areas to a linear expression. Using linear regression, develop the calibration curve for this dataset of various concentrations for monoethanolamine in toluene.   Peak Area Conc, mg/L 0.05 0.03 5 0.13 7.5 0.25 10 0.33 12.5 0.35 15 0.44

The following diagram is a simplified polarization curve of Evan's diagram for a carbon steel used in a chemical factory. The corrosion current can be determined through the diagram as shown in it. Calculate the weight loss per day and per m², and the thickness abrasion per unit time (in mpy) and evaluate its classification with respect to the corrosion rate. (Fe=7.86 g/cm³) 0.1 0.0 E com Fe POTENTIAL VOLTS (SHE) -0.2 -0.3 -0.4 -0.5 -0.6 -0.7 10-10 109 2H +2e CATHODIC Fe2 +2e ANODIC 7x10-5 H2 NON 10 10 10 10 10 CURRENT DENSITY, A/cm² COME 10 102²2

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

Q.1) In the experiment, you wrap a piece of copper wire around your magnesium strip to suspend the magnesium inside the eudiometer. Why is copper wire a good choice for this task? Group of answer choices It conducts electricity very well It reacts strongly with the acid It does not react with the acid It is much heavier than Mg   Part B) A 45 mL sample of a dry gas is collected at 380 torr and 25 °C. Calculate the volume of the gas sample (in mL) at STP.   Part C)Using the data provided in Table 3 in the handout (also provided below), calculate the vapor pressure of water at 21.0 °C. Table 3:  Vapor pressure of water at various temperatures T (˚C) P (mmHg) T (˚C) P (mmHg) T (˚C) P (mmHg) 0 4.58 16 13.63 26 25.21 5 6.54 18 15.48 28 28.35 10 9.21 20 17.54 30 31.82 12 10.52 22 19.83 40 55.3 14 11.99 24 22.38 50 92.5

P3

The problem that is listed below need to be solved and you may access that problem via viewing them through the attached images in this request. **Question Number #2.42**

3.52. A housing development is served by a water tower with the water level maintained between 20 and 30 meters above the ground, depending on demand and water availability. Responding to a resident's complaint about the low flow rate of water at his kitchen sink, a representative of the developer measured the water pressure at the tap above the kitchen sink and at the junction between the water main (a pipe connected to the bottom of the water tower) and the feed pipe to the house. The junction is 5 m below the level of the kitchen tap. All water valves in the house were turned off. a. If the water level in the tower was 25 m above tap level, what should be the gauge pressures (kPa) at the tap and junction? V Answer (P;) tap = 245 kPa b. Suppose the pressure measurement at the tap was lower than your estimate in Part (a), but the measurement at the junction was as predicted. State a possible explanation. c. If pressure measurements corresponded to the predictions in Part (a), what…

Aurorae Borealis, or northern lights, are natural light displays observed around the arctic region. They are caused by the interaction of charged particles emitted in solar flares with gases in the higher strata of the atmosphere. In the process, the energy from the charged particles is transferred to the gas molecules, giving rise to the emission of light. a. Describe the mechanism by which light is emitted as a result of this interaction.

What constant (use the letter in your answer) does the Sherwood number have in it's definition that we need in order to perform mass transfer calculations? ANS:_________. This simplification is necessary because so many phenomena can be affecting the mass transfer at once such as geometry or convection or even temperature gradients. Basically someone else has already solved those simultaneous differential equations for that particular situation and in our practice we can use their correlation rather than rework all those details ourselves.