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An aqueous solution containing 5.23 g of an optically pure compound was diluted to 500.0 mL with water and placed in a polarimeter tube 20.0 cm long. The measured rotation was -2.17° at 25 °C. Calculate the specific rotation of the compound.
What fraction of the O3 will have reacted when the rate falls to one-half of its initial value?
A buffer solution contains 0.386 M NH4Cl and 0.316 M NH3 (ammonia). Determine the pH change when 0.064 mol HBr is added to 1.00 L of the buffer
why doen't the mass number decrease? (because there is one less neutron). But the atomic number increases due. What happens to the electrons?
Draw the kekule structure of each of the following compounds. if cis/trans isomers exist, draw both and indicate the geometry of each. Also draw the structure of a constitutional isomer.
The structures of the disulfides (MS2) show an apparently unusual trend, proceeding from left to right across the transition series. On the left side (TiS2, ZrS2, MoS2, etc.)
how does the technique error affect the report percent water in the hydrated salt? Explain lab 5 percent water in a hydrated salt.
effuse through a membrane. How long would it take the same number of moles of Ar(g) to effuse through the same membrane?
Sodium chlorate,NaClO3, decomposes when heated to yield sodium chloride and oxygen, a reaction used to provide oxygen for the emergency breathing masks in many airliners
A solution is 89.8% by volume benzene(C6H6) in carbon tetrachloride at 20 degrees C. The vapor pressure of pure benzene at this temperature is 74.61 mmHg and it's density is 0.87865 g/cm^3;
What minimum volume of sulfur dioxide at STP would be necessary to produce 82.5 kg of sulfur?
Find out what will be the half-lives if [NOBr]o = 0.054 M - The rate constant for the second order reaction Is 0.80 M-1s-1 at 10 degree celsius temperature
What mass of AgBr would precipitate from this mixture? [Hint: Ksp of AgBr = 5.4*10^-13 and Kf of Ag(CN)2 is 1.0*10^21]
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