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A compound containing only boron, nitrogen, and hydrogen was found to be 40.3% boron, 52.2% nitrogen, and 7.5% hydrogen by mass. If 3.301 grams if this compound is dissolved in 50.00 grams of benzene, the solution produced freezes at 1.30 degrees celsius. if Kf ( freezing point depression constant) for benzene is 5.12 degree celsius per mass. and the freezing point of pure benzene is 5.48 degrees celsius, what is the molecular weight of this compound?
Mercury-205 has how many protons, neutrons, electrons, and electrons in the 1st quantum shell and in the compound BCl3 which is the more electronegative element?
find ratio of the atomic mass of silicon to hydrogen if every 100g of sih4 contains 87.45g of si and 12.55g of h.some
what is the concentration of dissolved o2 in blood or water at this partial pressure and a normal body temperature of
A buffer solution contains 0.10 mol of acetic acid and 0.13 mol of sodium acetate in 1.00 L. What is the pH of this buffer
compounds like rm ccl2f2 are known as chlorofluorocarbons or rm cfcs. these compounds were once widely used as
Upon taking the IR spectra of decanedioyl chloride and nylon 6,10, which of the 2 molecules would you expect to have a higher C=O stretching frequency and why
Calculate the resulting discharge temperature and the required horsepower for one stage compression of the following gas properties. Construct a plot of such discharge temperature and required horsepower versus one stage compression ratios of 2, 3..
AgI is more soluble in ammonia than in pure water. Calculate molar solubility of AgI in 0.80 M NH3 solution. Ksp(AgI)=8.5*10^-17, Kf=1.6*10^7 for Ag(NH3)2.
1) Identify the compound with the highest wavelength in an UV spectrum. a. benzene b. phenol c. phenolate ion d. aniline e. anilinium ion
A voltaic cell is constructed with an Ag/Ag+ half-cell and a Pb/Pb2+ half-cell. Measurement shows that the silver electrode is positive. Write balanced half-reactions and the overall spontaneous reaction.
Calculate(a) the molar concentration of the ammonia and (b) the mass/mass % concentration of ammonia (17.04g/mol). given a solution density of 0.990 g/mL
The equilibrium constant is 100. Calculate the concentrations of O2 present at equilibrium
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