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Sketch the plot for the Van Demeter rate equation (H=A+B/mu +C mu) for both gas and...
The van Deemter plot (a) Sketch and fully label a van Deemter plot for gas chromatography. (b) Sketch and fully label a van Deemter plot for liquid chromatography. (c) Point out the important differe...
The van Deemter plot (a) Sketch and fully label a van Deemter plot for gas chromatography. (b) Sketch and fully label a van Deemter plot for liquid chromatography. (c) Point out the important differences between the two graphs in (a) and (b). (d) The shape of the plots in (a) and (b) are often described based on four variables. Describe these variables and their contribution to the van Deemter curve. (e) One of the variables is negligible or non-existent for...
B. (4 pt) Sketch the van Deemter plot that shows the combined effect of the three...
B. (4 pt) Sketch the van Deemter plot that shows the combined effect of the three terms on the plate height versus the flow velocity and indicate on the plot where is the optimum flow velocity for the best separation efficiency of a chromatography column.
2. (15 marks) The van der Waals equation (first introduced by van der Waals in 1877) is an attemp...
2. (15 marks) The van der Waals equation (first introduced by van der Waals in 1877) is an attempt to describe the fact that real gases do not follow the ideal gas law. According to this equation where P is the pressure of the gas, V is the volume, R is the gas constant, T is the temperature, n is the number of moles, and a and b are parameters that depend on the gas (a) Suppose that 1.0 ±...
(a) One mole of a monoatomic van der Waals gas obeys the equation of state A3. ) (V-b)=RT (p+ and its internal energy is expressed as U CvT where Cv is the molar isochoric heat capacity of an ideal g...
(a) One mole of a monoatomic van der Waals gas obeys the equation of state A3. ) (V-b)=RT (p+ and its internal energy is expressed as U CvT where Cv is the molar isochoric heat capacity of an ideal gas. The gas is initially at pressure p and volume V (i) Explain the physical meaning of the parameters a and b in the equation of state of the gas (ii) Write down the equation that defines entropy in thermodynamics. Define...
number 11 (b) dipole-dipole attraction (c) hydrogen bond Define components of this equation: h = (2T...
number 11
(b) dipole-dipole attraction (c) hydrogen bond Define components of this equation: h = (2T cos θ )/ (rp Use the given equation above to answer this question. At 35°C, how high will water rise in a glass capillary tube with an inner diameter of 0.5 mm? For water, T-71.99 mN/m and p-10 g/cm3 8. 9. 10. The density of liquid sample of NH3 is 0.64 g/mL; the density of same sample in gaseaus phase at 25 "C, 1...
I need help on part B (C-F) please. I will rate the question if I get...
I need help on part B (C-F) please. I will rate the question if
I get it wrong or right on my homework.
MINICASE Scandi Home Furnishings, Inc. high grade plastics Kaj Rasmussen founded Scandi Home Furnishings as a corporation during mid 2013. Sales during the first full year (2018) of operation reached $1.3 million Sales increased by 15 percent in 2015 and another 20 percent in 2016. However, after increasing in 2015 over 2014, profits fall sharply in 2016,...
5. When all of the sample to be collected has left the column, will the drop...
5. When all of the sample to be collected has left the
column, will the drop of solution coming off the tip of the column
be acidic, basic or neutral?
6. How many H+ ions would be displaced from the ion
exchange column by 1 Cu2+ ion?
7. Binding sites on the ion exchange resin are saturated
with which ion before the sample solution is added?
8. Ions are displaced from the resin binding sites by
any ion that has...
1. For each of the following regression models, write down the X matrix and 3 vector....
1. For each of the following regression models, write down the X matrix and 3 vector. Assume in both cases that there are four observations (a) Y BoB1X1 + B2X1X2 (b) log Y Bo B1XiB2X2+ 2. For each of the following regression models, write down the X matrix and vector. Assume in both cases that there are five observations. (a) YB1XB2X2+BXE (b) VYBoB, X,a +2 log10 X2+E regression model never reduces R2, why 3. If adding predictor variables to a...
What are the instruments that have been utilized for the review article discussions? ` 1. Introduction...
What are the instruments that have been utilized for the
review article discussions?
`
1. Introduction In recent years, nanoclays have been the object of particular interest for many scientists and researchers in chemistry, physics, engineering and biology due to their excellent properties as well as their sustain- ability [1-3]. For instance, they represent the starting point to the de velopment of smart materials for drug delivery (4-9), food packaging [10-12), environmental remediation and wastewater treatment [13], cultural heritage [14–17and...
1. When it comes to financial matters, the views of Aristotle can be stated as:...
1. When it comes to financial matters, the views of Aristotle can be stated as: a. usury is nature’s way of helping each other. b. the fact that money is barren makes it the ideal medium of exchange. c. charging interest is immoral because money is not productive. d. when you lend money, it grows more money. e. interest is too high if it can’t be paid back. 2. Since 2008, when the monetary base was about $800 billion,...
The van Deemter plot (a) Sketch and fully label a van Deemter plot for gas chromatography. (b) Sketch and fully label a van Deemter plot for liquid chromatography. (c) Point out the important differences between the two graphs in (a) and (b). (d) The shape of the plots in (a) and (b) are often described based on four variables. Describe these variables and their contribution to the van Deemter curve. (e) One of the variables is negligible or non-existent for...
B. (4 pt) Sketch the van Deemter plot that shows the combined effect of the three terms on the plate height versus the flow velocity and indicate on the plot where is the optimum flow velocity for the best separation efficiency of a chromatography column.
2. (15 marks) The van der Waals equation (first introduced by van der Waals in 1877) is an attempt to describe the fact that real gases do not follow the ideal gas law. According to this equation where P is the pressure of the gas, V is the volume, R is the gas constant, T is the temperature, n is the number of moles, and a and b are parameters that depend on the gas (a) Suppose that 1.0 ±...
(a) One mole of a monoatomic van der Waals gas obeys the equation of state A3. ) (V-b)=RT (p+ and its internal energy is expressed as U CvT where Cv is the molar isochoric heat capacity of an ideal gas. The gas is initially at pressure p and volume V (i) Explain the physical meaning of the parameters a and b in the equation of state of the gas (ii) Write down the equation that defines entropy in thermodynamics. Define...
number 11
(b) dipole-dipole attraction (c) hydrogen bond Define components of this equation: h = (2T cos θ )/ (rp Use the given equation above to answer this question. At 35°C, how high will water rise in a glass capillary tube with an inner diameter of 0.5 mm? For water, T-71.99 mN/m and p-10 g/cm3 8. 9. 10. The density of liquid sample of NH3 is 0.64 g/mL; the density of same sample in gaseaus phase at 25 "C, 1...
I need help on part B (C-F) please. I will rate the question if
I get it wrong or right on my homework.
MINICASE Scandi Home Furnishings, Inc. high grade plastics Kaj Rasmussen founded Scandi Home Furnishings as a corporation during mid 2013. Sales during the first full year (2018) of operation reached $1.3 million Sales increased by 15 percent in 2015 and another 20 percent in 2016. However, after increasing in 2015 over 2014, profits fall sharply in 2016,...
5. When all of the sample to be collected has left the
column, will the drop of solution coming off the tip of the column
be acidic, basic or neutral?
6. How many H+ ions would be displaced from the ion
exchange column by 1 Cu2+ ion?
7. Binding sites on the ion exchange resin are saturated
with which ion before the sample solution is added?
8. Ions are displaced from the resin binding sites by
any ion that has...
1. For each of the following regression models, write down the X matrix and 3 vector. Assume in both cases that there are four observations (a) Y BoB1X1 + B2X1X2 (b) log Y Bo B1XiB2X2+ 2. For each of the following regression models, write down the X matrix and vector. Assume in both cases that there are five observations. (a) YB1XB2X2+BXE (b) VYBoB, X,a +2 log10 X2+E regression model never reduces R2, why 3. If adding predictor variables to a...
What are the instruments that have been utilized for the
review article discussions?
`
1. Introduction In recent years, nanoclays have been the object of particular interest for many scientists and researchers in chemistry, physics, engineering and biology due to their excellent properties as well as their sustain- ability [1-3]. For instance, they represent the starting point to the de velopment of smart materials for drug delivery (4-9), food packaging [10-12), environmental remediation and wastewater treatment [13], cultural heritage [14–17and...
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