Is the response from a Flame Ionisation Detector affected by changes in mobile phase flow rate? yes or no
Is the response from a Flame Ionisation Detector affected by changes in mobile phase flow rate?...
The flow rate was 1.00 mL/min and the column mobile phase volume was 1.80 mL. The stationary phase volume was 0.140 mL. For the compound with the peak at 2.75 min, what was the partition coefficient between the gas phase and the stationary phase at 150 degree C.
In liquid chromatography, the solvent (mobile phase) composition often changes with time during each run. What parameter usually changes with run time in gas chromatography and why?
These graphs show the changes in growth rate of one species in response to changes in population size of a second species. Given these results you would conclude 0 50 50 100 150 200 250 300 350 population sizes 100 150 200 250 300 350 potions SA A species A is in competition with species B B. species B is a predator on species A c. species A is a predator on species B O species is cooperating with species...
2. Heat flow, temperature changes, and changes of phase You have a furnace (Tfurnace 400° C that effectively provides an infinite heat source. You design a steel rod (k 50.2 W/m K) that can transmit heat from the furnace to need to a pot of water (specific heat, c = 4190 J/kg.K to raise it's temperature to 100° C. Suppose 1 kg of water in the pot, and the water is initially at a temperature that you have m 10°...
Using shifts in supply and demand curves, describe how a change in the exchange rate affected your industry. Label the axes, and state the geographic, product , and time dimensions of the demand and supply curves you are drawing. Explain what happened to industry price and quantity by making specific references to the demand and supply curves. How can you profit from future shifts in the exchange rate? How do you predict future changes in the exchange rate? You can...
Could someone please help me with all parts of this
question?
QUESTION 4 In an electrostatic precipitator, particles are removed from air by ionisation. The ons and electron flow ionised particles are diverted towards an earthed plate, build up on the collection plates and are removed from the air stream. The magnitude of the resulting current density reaching the earthed plate is well described by the so-called Warburg law: ITOTAL MARKS: 25] Earthed plate ,, ,, J-0 elsewhere with θ...
sul cause the intestinal phase to switch from excitatory to inhibitory Describe the neural response to the intestinal phase stimul 1. What is the name of this inhibitory neural reflex? Describe the endocrine response to the intestinal phase stimuli 1. What is the name of the group of hormones that target the stomach to inhibit gastric secretion (and motility? What is the goal of this inhibitory period of the intestinal phase of gastric section? vi. How is gastric motility (and...
A firm's net cash flow from operating activities is not affected by: Select one: O A. Cash paid for interest B. Cash paid to suppliers OC. Cash received for income tax refunds D. Cash received from customers O E. None of the above
Describe the effect on the flow rate given each of the following changes. Each change is to the original system and all other variables are held constant: The radius decreases The pipe length decreases The fluid viscosity decreases The pressure difference decreases
a) Create the TF between the input flow rate qi and output
h2.
b) Generate the frequency response plots (magnitude and phase)
for this TF using A1 = A2 = 0.001 m^2, R1=100, R2=200 sec/m^2 .