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The uncertainty (standard deviation) in a single buret reading for a 50-mL buret is about +/- 0.02 mL. Two readings (initial volume and final volume) are required to deliver a specified volume of titrant. For a delivered volume of 6.25 mL, compute the uncertainty in the volume of titrant delivered. Report your result as the relative standard deviation in parts per thousand, to the nearest 0.1 ppt.
The mercury in a 0.7325 gram unknown sample was precipitated with excess par aperiodic acid, H6IO5, according to the following balanced chemical equation:
An auto mechanic spills 90. mL of 2.6 M H2SO4 solution from a rebuilt auto battery. How many milliliters of 2.5 M NaHCO3 must be poured on the spill to react completely with the sulfuric acid
A 280 mL stock solution contains 2.3 M Ca(CN)2. When 105 mL of the stock solution is diluted to 120 mL, how many moles of CN- ions will be contained in the dilute solution?
P2.36) A pellet of Zn of mass 31.2 g is dropped into a flask containing dilute H2SO4 at a pressure P = 1.00 bar and temperature T = 300. K. What is the reaction that occurs? Calculate w for the process. Ans. w = -1190 J
What is the mole fraction of solute and the molal concentration for an aqueous solution
Like many ATP-dependant enzymes, the ATP synthase can be "run in reverse" by providing the enzyme with ATP. If the ATP synthase was reversed while inside the mitochondrion, which of the following would occur?
At a certain temperature, reaction has equilibrium constant (Kc) of 1.9 x10^19. Determine the equlibrium constant for the reaction based on this information at the same temperature.
Kennedy Space Center in Cape Canaveral, Florida, is the largest building in the world, with a volume of 3,666,500 m3.
Find the Diffusivity of Ammonia gas(A) in a mixture of nitrogen(B) and hydrogen(C). D(AB)=3.28x10^(-5)m2/s and D(AC)=1.093x10^(-4)m2/s.
The enthalpy of formation of ethanol, C2H5OH, is -277.o kJ/mol at 298.15K. Calculate the enthalpy of combustion of one mole of ethanol, assuming that the products are CO2 and H2O
Interhalogens are covalent compounds when one halogen is bonded with another halogen. When 3.299 of iodine reacts with fluorine, 5.768g of IFx is formed. What is the value of x in product formula (IFx)?
The generalized van der Waals chemical potential of a pure solvent and a dilute solute in a solvent
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