Engineering, 25.01.2020 03:31, harveyangel123p2tjae
Exactly 5.00 ml aliquots of a solution containing phenobarbital were measured into 50.00ml volumetric flasks and made basic with koh.
the following volumes of a standard solution of phenobarbital containing 2.00 µg/ml of phenobarbital were then introduced into each flask and the mixture was diluted to volume: 0.00, 0.500,1.000, 1.50, and 2.00ml.
the fluorescence of each of these solutions was measured with a fluorometer, which gave volumes of 3.26, 4.80, 6.41, 8.02, and 9.56 respectively.
(a) pot the data.
(b) using the plot from (a) calculate the concentration of phenobarbital in the unknown.
(c) derive a least-squares equation for the data.
(d) find the concentration of phenobarbital from the equation in (c)
(e) calculate a standard deviation for the concentration obtained in (d)
Answers: 3
Engineering, 04.07.2019 18:10, hadellolo8839
Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false
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Engineering, 04.07.2019 18:10, katelynn73
Atmospheric air has a temperature (dry bulb) of 80° f and a wet bulb temperature of 60° f when the barometric pressure is 14.696 psia. determine the specific humidity, grains/lb dry air. a. 11.4 c. 55.8 d. 22.5 b. 44.1
Answers: 1
Engineering, 04.07.2019 18:20, AnonymousLizard52303
A2-m rigid tank initially contains saturated water vapor at 100 kpa. the tank is connected to a supply line through a valve. steam is flowing in the supply line at 600 kpa and 300 c. the valve is opened, and steam is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. a thermometer placed in the tank indicates that the temperature at the final state is 200°c. determine (a) the mass of steam that has entered the tank (b) the amount of heat transfer.
Answers: 3
Exactly 5.00 ml aliquots of a solution containing phenobarbital were measured into 50.00ml volumetri...
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