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Explain what is the melting point of the hydrazone formed when heptanal reacts with 2, 4-dinitrophenylhydrazine?
What is the osmotic pressure of a solution made from dissolving 50.0g of glucose rm C6H12 O6 in 250mL of water at 36.0 C
In the purification of a mixture, what determines whether you use extraction or recrystallization as the initial procedure
A technician obtained the following results for the concentration (mg/dL) of cholesterol in a blood sample: 240, 252, 242, 238, 239, and 236. The technician re-measured the cholesterol in the same blood sample using a different method.
Metals such as magnesium and zinc react with dilute sulfuric acid to give hydrogen, according to the equation: M (s) + H2SO4 (aq) -------> MSO4 (aq)
The bonding in benzene differs from that of other unsaturated hydrocarbons in that each carbon atom participates in: a. one single bond and on delocalized bond
Calculate the molar mass of the acid. Calculate the second dissociation constant for the acid, Ka2.
Find out the empirical formula of the following compound if a sample contains 0.104 mol K, 0.052 mol C, and 0.156 mol O;
Ammonia is a gas whose smell we detect in manure as well as in some cleaning solutions, among other things. If the concentration of this noxious gas can be controlled by regulating the pH of the water because only the non-protonated form is volati..
When using 95% ethanol, the rf value for methylene blue was a lot larger than the rf value for fluorescine. Why does this happen
what kind of precautions need to be taken when working with grignard reagents? in addition which of the following types
Arsine (AsH3) has a vapor pressure is 35 Torr at -111.95?C and 253 Torr at -83.6 ?C. What is the normal boiling point of arsine.
A voltaic cell is constructed by immersing a strip of silver in a 1.0M AgNO3 solution and a strip of cadmiun metal in a 1.0M Cd(NO3)2 solution. The circuit is completed by a wire and a salt bridge in the usual way. What is the cell potential for t..
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