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What is the synthesis for the following compunds from simple organic precursors? Important Using original syntheses, not from published works.
1. camphor
2. cantharidin
3. cucurbitine
4. 5 - fluorouracil
5. retinoic acid
Calculate the molar concentration of a solution prepared by dissolving 2.34 g of sodium sulfate (MW = 142) in enough waterto make 250 ml of solution.
Find the Ksp range for PbI2(s) (hint: you will need to apply the dilution formula to the concentration of Pb(NO3)2 and KI. Think about what you will need to find the Ksp and look for those pieces of information in the video.
Solubility in water in hexane, when mixed water and ether(diethyl ehter), why two layers will form ? Which layer will be top layer why?
The Balmer series of transitions for the hydrogen atom result in absorption of photons that all originate from the n = 2 level. What are the longest and shortest wavelength photons in the Balmer sequence?
If the mass of the metal cylinder pictured below is 18.71 g, calculate the density of the cylinder.
How much 10.0 M HNO3 must be added to 1.00L of a buffer that is 0.001 M acetic acid and 0.1 M sodium acetate to reduce the pH 5.45?
A sample of gas occupies a volume of 115mL at a pressure of 720. mmHg. Calculate its volume at STP.
What is the freezing point of a solution prepared by dissolving 11.3 g of Ca(NO3)2 in 115 g of water?
Explain the difference between accuracy and precision, as it pertains to experimental data. The best way to do so is to define
Hydrazine, N2H4, may react with oxygen to form nitrogen gas and water. N2H2(aq)+O2(g)=arrow=N2(g)+2H2O(l)
Calcium chloride is added to a polymer solution of sodium alginate to cross-link the polymers, reating a thicker mixture which is used to add texture of food (like milk shakes). What is the explanation for why this happens?
Explain why the C=C stretching mode gives rise to a rather weak IR band in 1-methylcyclohexane
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