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Question- Plutonium-236 is an alpha emitter with a half-life of 2.86 years. How long will it take for the 1.05mg sample of Pu-236 to decay to 0.200mg?
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At 50 degrees Celsius and atmospheric pressure, water is in the liquid phase. What two things could be done to liquid water to change it to a vapor?
Sketch a cell which depicts the electrolysis of a 1.00 M aqueous solution of HCl. Assume both the electrodes are copper. Indicate the ions in the solution and the half-reaction at each electrode. Calculate the minimum voltage required for the elec..
Question- You wish to make a 0.413 M hydrochloric acid solution from a stock solution of 3.00 M hydrochloric acid. How much concentrated acid must you add to obtain a total volume of 175 mL of the dilute solution? answer in mL
Calculate the change in internal energy, (Delta E) for the reaction. What is the enthalpy of formation per mole of product for the reaction
Compute the changes in the degree of polymerisation and the rate of the polymerisation caused by raising the temperature of polymerisation of styrene in C6H6, initiated by azobisisobutyronitrile from 60 0C to 70 0C.
In the decay series that starts with uranium-238, the first four steps consist of the emission of an alpha-particle, two beta-particles, and then another alpha-particle. What is the daughter isotope after the fourth emission
Chlorine gas can be shaped commercially by passing an electric current through a concentrated solution of sodium chloride. The unbalanced equation is NaCl(aq) + H2O(l) = NaOH(aq)+Cl2(g)+H2(g). If the brine contains 430 g of NaCl explain how much H..
A sample of 13 g of nitrogen can be combined with 14.857143 g of oxygen to form nitric oxide gas (NO). What mass of oxygen would be required to convert the same sample of nitrogen to nitrogen dioxide (NO2) instead
explain the volume increase during transformation from austenite to ferrite. why is the change in volume larger for
Calculate the values of vmax and Km for the reaction. c) How much of a noncompetitive inhibitor must be added to yield 90% inhibition? The degree of inhibition, i, is calculated by i% = (1-?) 100%, where ? = (vo)inhibition/ vo Assume KI = 2.9 x 1..
A solution of acetic acid, HC2H3O2, on a laboratory shelf was of undetermined concentration. If the pH of the solution was found to be 2.39, what was the original concentration of the acetic acid
What product forms at each electrolode in the aqueous electrolysis of the following salts: 1. LiF 2. SnSO4
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