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The molality of potassium bromide, KBr, in an aqueous solution is 1.64 mol/kg.
What is the mole fraction of potassium bromide in the solution? _________
22.5ml of .383 molar h2so4 is required to completely neutralize 20ml of koh solution. what is the molarity of the koh
A photomultiplier tube detects photons by amplifying the current generated by the photoelectric effect. Which metal, lithium, calcium, aluminum or gold would you choose if you were trying to make a photomultiplier tube sensitive to the largest por..
Nitrogen gas when combined with hydrogen gas forms ammonia gas according to the following equation N2(g) + 3H2(g) = 2NH3(g). Delta H(rxn)=-56 kJ. The delta H(rxn) was determined using Hess's Law and the following three related reactions:
if the average speed of an oxygen molecule is 4280 cmsec at 25c what is the average speed of carbon dioxide molecule at
How much heat energy,in Kilojoules,is required to convert 70.g of ice at -18.0 degree's C to water at 25 degree's C
Calculate the pH when 27.6 mL of 0.048 MHCl is added to 100.0 mL of the above buffer.
Buffer solution Problem to determine pH, Determine the pH after the addition of 10.0ml of 0.1M NaOH to 100.00ml of this buffer. An aqueous solution of 100.0ml 0.100M NaCl is titrated with 0.100M AgNO3 (AgCl Ksp= 1.0x10^-10) pAg=-log[Ag+]
If a solute interacts strongly with the stationary phase what practical implication might this have
Write the complete ionic equation fot the double displacement reaction that occurs when (Aq) soulutions of barium nitrate, Ba(NO3)2, and sodium chromate (NA2CrO4) are mixed) what are the spectator ions and the net ionic equation.
When 3 methyl 1 butane reacts with Hbr, two alkyl halides are formed: 2 bromo 3 methylbutane and 2 bromo 2 methyl butane. Propose a mechanism that explains the formation of these products.
An aerosol can has a gas pressure of 133 kPa at 293 K. Calculate the pressure when the can is heated to 460 K.
Calculate the mass percent of a NaCl solution in which 110 g of NaCl is dissolved in 2.41 L of water at 25 0C (density = 0.997 rm g/mL).
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