Homework Answers
A enzyme (protein) with higher melting temperature(Tm) is more stable. From the graph protease has maximum Tm peak (1st scan).
And stability of lipase is minimum. It is rapidly destroyed even by the proteases.
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1. Below is a differential scanning calorimetry thermogram for three different proteins. Use this to estimate...
In a differential scanning calorimetry experiment, the melting temperature, Tm, of a certain protein is found...
In a differential scanning calorimetry experiment, the melting temperature, Tm, of a certain protein is found to be 46 C and the enthalpy of denaturation is 382 kJ/mol. a. Estimate the entropy of denaturation assuming that the denaturation is a two-state process; that is: native protein<=>denatured protein. b. The single polypeptide protein chain has 122 amino acids. Calculate the entropy of denaturation per amino acid. Comment on your results.
Isothermal differential scanning calorimetry (DSC) tests were performed on three unsaturated polyester (UPE) samples at three...
Isothermal differential scanning calorimetry (DSC) tests were
performed
on three unsaturated polyester (UPE) samples at three different
temperatures
(100C, 110C, and 120C). The output for the three DSC
tests is presented in the Fig. 4.30. On the graph, label which
curve is
associated with which test temperature. From the curves in Fig.
4.30 estimate
the total heat of reaction, QT.
1600 cal/(min mg) 1200 1000 800 600 400 Figure 4.30 Isothermal DSC measurements of UPE 200 8 samples (Courtesy of...
From the plot of vapor pressures vs temperature above, estimate the normal boiling point of ethanol....
From the plot of vapor pressures vs temperature above, estimate
the normal boiling point of ethanol.
°C
900 800 Carbon disulfide 700 600 500 Vapor pressure (mm Hg) Methanol Ethanol 400 Heptand 300 200 100 0 10 20 30 40 70 80 90 100 110 50 60 Temperature (°C)
The table below shows the marginal revenue and costs for a monopolist. Demand, Costs, and Revenues Price Quantity M...
The table below shows the marginal revenue and costs for a monopolist. Demand, Costs, and Revenues Price Quantity Marginal Revenue (dollars) Demanded (dollars) $130 200 $110 120 300 90 110 400 70 100 500 SO 90 600 30 80 700 10 Marginal Cost Average Total Cost (dollars) dollars) $25 $139.00 32 103.30 40 87.50 50 8 0.00 62 77.00 77 7 7.00 What is the monopolist's profit at the profit maximizing level of output? $10,000 $50,000 $80,000 $0
6. Assume that the vapor pressure-temperature diagram below represents a mixture of (-)- menthol (MW =...
6. Assume that the vapor pressure-temperature diagram below represents a mixture of (-)- menthol (MW = 156 g/mol) and water (MW = 18 g/mol). (-)-Menthol is a monoterpene that is found naturally in mint leaves (mentha arvensis) and in peppermint oil. (a) Answer the following questions based on the diagram below. Assume the standard atmospheric pressure for all questions. į. Determine the boiling point of (-)-menthol. ii. Determine the boiling point of (-)-menthol-water mixture. iii. Determine the vapor pressure of...
1) In a low-temperature drying operation, air at 60°C and 10% RH is being passed over...
1) In a low-temperature drying operation, air at 60°C and 10% RH is being passed over diced carrots at the rate of 20 kg dry air/s. The constant rate of evaporation of water from the carrots was measured as 0.16 kg moisture/s. Estimate the temperature and RH of the air leaving the dryer. (8 pts) 2) 100 kg of bulghur with an initial moisture content of 80% on wet basis and a surface area of 12 m² is dried in...
I need your help solving this thermodynamics problem please: Question Completion Status: QUESTION 1 20 points...
I
need your help solving this thermodynamics problem please:
Question Completion Status: QUESTION 1 20 points Save Ans The heat-pump system shown is designed to provide water-heating and space-cooling. The system includes a heat exchanger to subcool the R134a refrigerant at the outlet of the water heater while heating the refrigerant at the outlet of the evaporator. Given the following data, determine the enthalpy at each station, 1 through 6, using the R134a property tables (click here). Type your answers...
lab question 1. What is the basis of the different purification methods? 2. What are some...
lab question 1. What is the basis of the different purification methods? 2. What are some of the factors the might have interfered with your results? 3. How might you improve the process to increase the yield and purity? lab process E. coli BL21 (DE3) cells were transformed with the pET Topo-1521 vector containing a reading frame encoding the green fluorescent protein (GFP). Cells were cultured in M9ZB media at 37°C until the absorbance at 600 nm reached 0.7, at...
IB math studies 1. Ten students were asked for their average grade at the end of their last year...
IB math studies
1. Ten students were asked for their average grade at the end of their last year of high school and their average grade at the end of their last year at university. The results were put into a table as follows: Student High School grade, University grade, y 90 3.2 2.6 75 80 3.0 70 95 3.8 85 90 3.8 2.8 70 95 85 3.0 3.5 10 Total 835 30.4 (a) Given that s, 8.96, sy-0.610 and...
Can somone show me how to do the 1st problem? Need to find the LS and...
Can somone show me how to do the 1st problem? Need to
find the LS and SS for the fit and the LH and SH for the hole.
Fits are all SHAFT BASIS METRIC but the shaft and hole diameters can not be used right out of the table. This is because the 3mm shaft tolerance does not match. You will need to lookup the "Fit" from the table, and then use the LS (Largest Shaft) and SS (Smallest Shaft)...
Isothermal differential scanning calorimetry (DSC) tests were
performed
on three unsaturated polyester (UPE) samples at three different
temperatures
(100C, 110C, and 120C). The output for the three DSC
tests is presented in the Fig. 4.30. On the graph, label which
curve is
associated with which test temperature. From the curves in Fig.
4.30 estimate
the total heat of reaction, QT.
1600 cal/(min mg) 1200 1000 800 600 400 Figure 4.30 Isothermal DSC measurements of UPE 200 8 samples (Courtesy of...
From the plot of vapor pressures vs temperature above, estimate
the normal boiling point of ethanol.
°C
900 800 Carbon disulfide 700 600 500 Vapor pressure (mm Hg) Methanol Ethanol 400 Heptand 300 200 100 0 10 20 30 40 70 80 90 100 110 50 60 Temperature (°C)
The table below shows the marginal revenue and costs for a monopolist. Demand, Costs, and Revenues Price Quantity Marginal Revenue (dollars) Demanded (dollars) $130 200 $110 120 300 90 110 400 70 100 500 SO 90 600 30 80 700 10 Marginal Cost Average Total Cost (dollars) dollars) $25 $139.00 32 103.30 40 87.50 50 8 0.00 62 77.00 77 7 7.00 What is the monopolist's profit at the profit maximizing level of output? $10,000 $50,000 $80,000 $0
6. Assume that the vapor pressure-temperature diagram below represents a mixture of (-)- menthol (MW = 156 g/mol) and water (MW = 18 g/mol). (-)-Menthol is a monoterpene that is found naturally in mint leaves (mentha arvensis) and in peppermint oil. (a) Answer the following questions based on the diagram below. Assume the standard atmospheric pressure for all questions. į. Determine the boiling point of (-)-menthol. ii. Determine the boiling point of (-)-menthol-water mixture. iii. Determine the vapor pressure of...
1) In a low-temperature drying operation, air at 60°C and 10% RH is being passed over diced carrots at the rate of 20 kg dry air/s. The constant rate of evaporation of water from the carrots was measured as 0.16 kg moisture/s. Estimate the temperature and RH of the air leaving the dryer. (8 pts) 2) 100 kg of bulghur with an initial moisture content of 80% on wet basis and a surface area of 12 m² is dried in...
I
need your help solving this thermodynamics problem please:
Question Completion Status: QUESTION 1 20 points Save Ans The heat-pump system shown is designed to provide water-heating and space-cooling. The system includes a heat exchanger to subcool the R134a refrigerant at the outlet of the water heater while heating the refrigerant at the outlet of the evaporator. Given the following data, determine the enthalpy at each station, 1 through 6, using the R134a property tables (click here). Type your answers...
IB math studies
1. Ten students were asked for their average grade at the end of their last year of high school and their average grade at the end of their last year at university. The results were put into a table as follows: Student High School grade, University grade, y 90 3.2 2.6 75 80 3.0 70 95 3.8 85 90 3.8 2.8 70 95 85 3.0 3.5 10 Total 835 30.4 (a) Given that s, 8.96, sy-0.610 and...
Can somone show me how to do the 1st problem? Need to
find the LS and SS for the fit and the LH and SH for the hole.
Fits are all SHAFT BASIS METRIC but the shaft and hole diameters can not be used right out of the table. This is because the 3mm shaft tolerance does not match. You will need to lookup the "Fit" from the table, and then use the LS (Largest Shaft) and SS (Smallest Shaft)...
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