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The standard enthalpy of atomization of an element is the energyrequired to convert 1 mole of an element in its most stable form at25 centigrade to 1 mole of monatomic gas. Given that the standardenthalpy of atomization for sodium is 108.4 kJ mol-1,calculate the energy in kilojoules
a 13.6 sample of nh4no3 is dropped into a constant-pressure calorimeter containing 175 g of water at 23.5 c. what
Calculate the vapor pressure lowering of a solution of 2.80 g of aspirin (molecular weight = 180.15 g/mol) in 45.0 g of methanol (CH3OH) at 21.2°C.
The compound BeBr2 has a total of how many shared electrons and how many non-bonded electrons?
Calculate the pH at the equivalence point if 25.00 mL of 0.010 M barbituric acid (HC4H3N2O3) is titrated with 0.20 M NaOH
How much of the drug substance has to be used (calculate)? B) How much NaCl do you need to add to hace an isotonic preparation?
To see the affect on W when n > N/2, calculate W for N = 20 and n = 9 and 11. Is the result at all surprising? Why? Can you explain why you get this result? What other choices of n would give similar results?
Calculate the full width at half height (FWHH) of a Gaussian function exp(-πx2/σ2). By considering a monochromatic source show that a Michelson interferometer performs a Fourier transform of the source in the frequency domain to a signal in the tim..
the idea of using the pressure at the bottom of the naoh tank to drive the flow of NAOH to where it will join the HCL
Calculate the equivalent number of moles of potassium permanganate? 3) calculate the clarity of the potassium permanganate solution?
A spoon was silver plated electrolytically in a Silver nitrate solution. If 0.750 grams of silver was deposited on the spoon at a constant current of twenty mili amperes, determine how long in hours did the electrolysis take?
Solid Lithium hydride is added to water. Find the complete molecular, complete ionic, and net ionic formulas.
Calculate the enthalpy and entropy change of C2H6 from a state at 300K and 30 bar to a state at 400 K
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