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A TLC chromatographic system is prepared using a silica coated plate and the non-polar solvent hexane. Two samples are spotted onto the plate and developed as in the laboratory experiment. THe Rf of the two samples are: 1.)=0.02 and 2.)=1.0 respectively. What is the elution order if these same compounds are separated on a silica column using a polar solvent such as water?
What mass of helium gas is needed to pressurize a 112.0 L tank to 262 atm at 25°C?
A gas sample has an original volume of 680 ml when collected at 720mm and 28C. what will be the volume of the gas sample if the pressure increases to 820 mm and the temperature increases to 55C?
write up the chemical reaction between resorcinol and phtalic anhydride.
What is the rate of entropy generation within the tank? 3.) If we duplicated the stream conditions (temperatures, pressures, and flowrates) with an internally reversible process, what is the maximum rate at which work could be obtained?
A zero-order reaction has a constant rate of 3.20×10-4 . If after 60.0 seconds the concentration has dropped to 6.50×10-2 , what was the initial concentration?
A 270- flask contains pure helium at a pressure of 755 . A second flask with a volume of 485 contains pure argon at a pressure of 727 torr.
How many moles of ammonia will be required to produce 10.0 mol of water
Calculate the mass percent of a solution that is prepared by adding 40.0 g of rm NaOH to 408 g of {rm H_2O}.
Write equations for the ionization of the following acids. Which ones ionize only slightly?
If 24 g of SiO2 is reacted with an excess of carbon, what volume of gaseous carbon monoxide will be produced at a temperature of 17°C and a pressure of 735 mm Hg?
what kind of product distribution and what does that tell you about the operating mechanism and the factors that affect product distribution?
Van der Waals constants can be found here. Use the ideal gas equation to calculate the pressure under the same conditions
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