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There is a mixture that is soluble only in methylene chloride. I wanna run the column in 10% Ethyl acetate/hexanes. Which method of column loading should I use in this case and why?
How many different aldols (b-hydroxyaldehydes), including constitutional isomers and stereoisomers, are formed upon treatment of butanal with base?
How many moles of N2O3 are needed so that you have 2.55 x 1024 oxygen atoms.
The molar heat capacities of Iron and Gold are 24.19 J/mol C and 25.41 J/mol C respectively. What is the final temperature of the water and pieces of metal?
In which state is the average distance between molecules the greatest?, Explain the difference in densities at the two temps in terms of the kinetic molecular theory.
How many Grams of NH3 are consumed when 12.5 grams of 02 react completely in the following equation? I am not sure exactly how to solve this.
If 435 grams of water at 23 celcius abssorbs 281 kJ of heat froma mountain climber's stove at an elevation where the boiling point of water is 87 celcius
A compound is 40.0%C, 6.70%H, and 53.3%O by mass. Assume that we have a 100.g sample of this compound. What are the subscripts in the empirical formula of this compound?
what is the total pressure in the reaction flask at the end of the reaction? What are the partial pressures of the gases in the flask? 6A(g) + 2B(g) %u2192 2A3B(g)
How many moles of molecular oxygen are consumed by the complete combustion of one mole of the following compound?
the wavelength of the emitted photon corresponds to the difference in energy between the two energy levels. What were the principal quantum numbers of the initial and intermediate excited states involved?
If 1.02 g KHP (molar mass = 204.2 g/mol) is titrated with 28.34 mL of NaOH, what is the concentration of NaOH?
if junipers were allowed to grow in a medium containing acetate in which the methyl carbon was labeled with 14C
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