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Question- The vapor pressure of pure water at 96 degrees C is normally 657.6 mmHg, but decreased to 622.8 mmHg upon addition of an unknown amount of barium hydroxide, Ba(OH)2, to 247.5 g of water at this temp. How many grams of barium hydroxide were added? Assume complete dissociation of solute.
Explain the each step. Explain the process and each step.
Calculate the minimum chloride ion concentration needed to initiate precipitation of PbCl2 from a solution that contains 0.01M Pb^2+ (aq).
A gas sample has an original volume of 680 ml when collected at 720 mm and 28°C. What will be the volume of the gas sample if the pressure increases to 820 mm and the temperature increases to 55°C
Problem- Starting from an alcohol and an alkyl halide, each of 4 or fewer carbons, show how to make t-butyl propyl ether by an sn2 reaction
An unknown compound degrades when exposed to sun light by first order kinetics. The half-life for this process is exactly 5.12 weeks. What is the rate constant
Calcium metal has a density of 1.55g/cm3 and crystallizes in a cubic unit cell with an edge length of 558.2pm. a. how many Ca atoms are in one unit cell?
Identify (invent??) a salt which has a weak acid as it's cation and a weak base as its anion so that the salt would yield an acidic solution in water.
When 1.25 g of an element X is reacted with excess with bromine, a compound of empirical formula XBR5 forms with a mass 6.62 g a) Find out the atomic mass of X
A 0.062 M aqueous sample of species y was analyzed by atomic absorption spectroscopy at 525 nm and in a 1.00-cm cell and yielded a %T value of 70.19 % . Calculate the molar absorptivity of species y.
The wavefunction will become ionized d. The parity of the wavefunction will go to zero e. the sign might change f. the particles become fermions g. The wavefunction will invert around a center of inversion h. nothing may happen
A solution of 0.08M ni-EDTA was buffered to pH 10 with .1M ethylenediamine. determine the fractional composition of uncomplexed metal ion.
25.00 ml aliquots of thiis solution was titrated with monoprotic strong base NaOH (0.0800 M). The titre volume of NaOH was 40.00ml. Calculate the molecular weight of H2A.
Problem- The 1H NMR spectrum of camphor is complex, so we won't use that for characterization. Instead, consider the structures of starting material (Isoborneol) and product (camphor) and describe how 13C NMR analysis could determine whether your ..
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