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Hydrocyanic acid hydrolyzes in water according to the reaction:
HCN(aq) + 2 H2O → NH4CO2The rate constant for this reaction is 2.3 x 10-3 M-1 days-1 at a given temperature. Suppose you started with 2 M of HCN(aq), what would be the molar concentration of HCN(aq) at 20 days?
Identify the nuclide produced when americium-241 decays by alpha emission, 241 / 95 Am→ 4 / 2 He + ? Express your answer as an isotope using prescripts.
The acidic anion reacts with strong bases according to the following net ionic equation HC8H4O4-(aq) + OH- (aq)--->C8H4O4-2(aq) + H2O(l) If a 0.902g sample of KHC8H4O4 is dissolved n water and titrated to the equivalence point, with 26.45 mL of Na..
A patient is given 0.055mg of technetium -99m, a radioactive isotope with a half-life of about 6.0 hours.
Why is the injector/detector temperature set at 180 C while the column temperature is only at 90 C and why is it possible to inject the sample directly with a syringe onto the top of the column in GC but not HPLC
Calculate the volume in liters of a 8.75x10^-5 M silver (II) oxide solution that contains 200.g of silver (II) oxide
Calculate the energies of the following waves (in kilojoules per mole), and tell which memeber of each pair has the higher value. A) An FM radio wave at 99.5 MHZ and an AM radio wave at 1050 kHZ
How much magnesium chloride would you have to purchase to make up 10.0 L of bath water saturated with magnesium chloride
what is the fundamental mechanism by which enzymes enhance the rate of chemical reactions?
What statement below best describes the graph representing the integrated 1st order rate law plot of ln[a] vs t having a straight line negative slope equal to -k
A buffer was prepared by mixing a solution that is 0.285 M in HA and 0.385 in A-. The pH of this buffer was 4.435. then to 405 mL of this buffer solution was added to 21.5 mL of 2.0 M HCl. What is the pH of this new solution?
A cylinder fitted with a piston contains 3.00 moles of He gas (ideal!) at P = 1 bar and is held in a large constant-temperature bath at 400 K. The pressure is reversibly increased to 5.00 bar.
The reaction between 0.0459g of magnesium with excess of HBr was carried out in an ice calorimeter. The volume of water in the calorimeter decreased by 0.18mL during the reaction.
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