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Derive the symbol for the ground state of carbon atom.
If you start with 11.8 g of C3H8 and 5.44 g of O2 which one is the limiting reagent?
Explain the formation of dative bond in NH4Cl?
Give reasons:(1) viscosity of a liquid decreases at high temperature.(2)H-F has lower boiling point as compared to H2O although fluorine is more electronegative than oxygen.(3) H-Cl has polar bond while Cl-Cl is non polar bond.
What are the different transformational stages of malarial parasite in human RBC?
State and explain covalent bond with suitable example?
Consider a column of 300 mm long that has 600 theoretical plates. Suppose that the mobile phase volume of this column is 0.50 mL and the flow rate of the carrier gas is 1.5 mL/min
.
a) Calculate the retention times and retention volume for analytes with k’ = 1 and k’ = 10
b) Calculate the peak width, W, for these analytes.
.
a) Calculate the retention times and retention volume for analytes with k’ = 1 and k’ = 10
b) Calculate the peak width, W, for these analytes.
Consider a column of 300 mm long that has 600 theoretical plates. Suppose that the mobile phase volume of this column is 0.50 mL and the flow rate of the carrier gas is 1.5 mL/min.
a) Calculate the retention times and retention volume for analytes with k’ = 1 and k’ = 10
b) Calculate the peak width, W, for these analytes.
a) Calculate the retention times and retention volume for analytes with k’ = 1 and k’ = 10
b) Calculate the peak width, W, for these analytes.
Briefly explain in no more than three sentences, how each of these factors will likely
affect the retention time of a chromatographic process:
a) Increase the length of the column
b) Decrease carrier gas velocity
c) Increase the thickness of a stationary phase
d) Increase the internal diameter of a column
e) Setting the injection port temperature below the boiling point of the analyte
f) Setting the column temperature below the boiling point of the analyte
g) Significant diffusion of analyte in carrier gas
affect the retention time of a chromatographic process:
a) Increase the length of the column
b) Decrease carrier gas velocity
c) Increase the thickness of a stationary phase
d) Increase the internal diameter of a column
e) Setting the injection port temperature below the boiling point of the analyte
f) Setting the column temperature below the boiling point of the analyte
g) Significant diffusion of analyte in carrier gas
A compound is made of copper, nitrogen, and oxygen atoms. A sample of the compound has 6.4 grams of copper, 2.8 grams of nitrogen and 9.6 grams of oxygen. The compound has a molar mass of 188 g /mol. Write the name and formula of the compound.
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#339914 on Dec 2023
#339914 on Dec 2023