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Sodium-23 is subjected to neutron bombardment to prouce sodium-24. While removed from the reactor, the sample is radioactive with initial beta activity of 2.54*104 dpm. Subsequent to 20 hours, the beta activity drops to 1.01*104 dpm. Write the equations for the neutron capture reaction as well as for the subsequent beta decay reaction. Find out the half-life of sodium-24 in hours.
the micronutrient calcium is often applied in the form of calcium (II) sulfate. Write the equation for the formation of calcium (II) sulfate from calcium (II) oxide and an appropriate acid.
Use the appropriate standard reduction potentials to calculate the value
determine theoretical yield limiting agent amp excess reagent.one form of phosphorous called white phosphorous burns
When 2-methylpropene is treated with sulfuric acid the resulting mixture can be used to convert benzene to tert-butylbenzene
Calculate the final volume of a 0.500 L gas container that increased in temperature from twenty six degree Celsius to sixty degree celsius while the pressure increased from 760 torr to 1170 torr?
Arsenic acid (H3AsO4) is a triprotic acid with Ka1 = 5. 10-3, Ka2 = 8. 10-8, and Ka3 = 6. 10-10. Calculate [H + ], [OH ? ], [H3AsO4], [H2AsO4? ], [HAsO42- ], and [AsO43- ] in a 0.62 M arsenic acid solution.
The following reaction is first order with respect to NO and first order with respect to O2, and the rate constant is 5.0 x 104 M-1s-1: 2NO(g) + O2(g) --> N2O4(g) a) Write the rate law for this reaction
the energy levels the electron can occupy in the be3ion can be calculated using the energy level equation. calculatethe
3.0 l of he gas at 5.6 atm pressure and 25 degrees celcius and 4.5 l of ne gas at 3.6 atm and 25 degrees celcius are
In the reaction 2-phenylacetic acid + ethanol in a H2SO4 solution yields Ethyl-2-phenylacetate, (a) which group in the acyl compound is being substituted and (b) what is the substituting group?
How many grams of CO2 can be produced by the reaction of 35.5 grams of C2H2 and 45.9 grams of O2? Please help with the balancing the equation
what is the freezing point of radiator fluid that is 50 antifreeze by mass? kf for water is 1.86 cm. ethylene glycol
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