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The mass spectrum of an organic compound,C40H82 contains M+ andM+1 peaks. If we assume the intensity ofM+ peak 100, what would be the intensity of M+1peak? Note: Ignore any effect of higher isotope of H.
Zn (s) + 2 HCl (aq) = H2 (g) + ZnCl2 (aq) If 1.26 L of H2 gas are formed at STP, how many g of HCl reacted
suppose that coal of density 1.5 gcm3 isnbsp pure carbon. it is in fact much more com-nbsp plicated but this is a
A drop of NaOH titrant adheres to the side of the buret (due to a dirty buret) between the initial and final reading for the titration. As a result of the "clean glass" error, will the molar concentration of the NaOH be reported too high or too lo..
Trimethylamine (CH3)3N is a substance responsible in part for the smell of fish. it has a boiling point of 3.5 degrees c and a molecular weight of 59.1.
Why is the first step in an electrophilic aromatic bromination reaction so much more endothermic than the first step in an electrophilic addition to an alkene
A solution of ethanol (C2H5OH) in water is prepared by dissolving 88.0 mL of ethanol (density = 0.79 g/cm3) in enough water to make 300.0 mL of solution. What is the molarity of the ethanol in this solution?
A system expands in volume from 2.0 L to 24.5 L at constant temperature. Calculate the work (w) if the expansion occurs against a constant pressure of 5.00 atm.
how many joules are required to melt a 325 degrees Celsius ice cube at 0 degrees Celsius and to warm the liquid to 15 degrees Celsius
consider the equation aaq 2baq 3caq 2daq. in one experiment 45.0 ml of 0.050 m a is mixed with 25.0 ml 0.100 m b. at
Adrenaline is the hormone that triggers the release of extra glucose molecules in times of stress or emergency. A solution of 0.64 g of adrenaline in 36.0 g of CCl4 elevates the boiling point by 0.49°C. What is the molar mass of adrenaline?
a 15 ml sample of a solution of pbclo32 was diluted with water to 19 ml. a 15 ml sample of the dilute solution was
the generated hydrogen gas h2 is collected over h2o at the temperature of twenty three degree celsius. the volume of
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