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Question #1 . Identify the following substances involved in radioactive reactions, describing how you obtained the answer:
-An element which undergoes alpha decay to form lead-208 -The product of the alpha decay of radium-226 -The product of beta decay of iodine-131
Question 2. Compare the different types of radioactivity (alpha, beta, gamma, positron)?
Explain what is the physical origin of quantized energy states for a particle confined to move in a one-dimensional box
In an experiment conducted last Tuesday, the time it takes for a certain reaction to proceed seems to be related to the initial concentration of one of the reactants A.
in an experiment 23.4g of iron sulphide fes s are added to excess oxygen and 16.5 grams of iron iii oxide fe2o3s are
compute the atomic packing factor for the diamond cubic crystal structure shown in the figure below. assume that
A rock is found to contain 83.7% of the amount of uranium-238 that it contained when it was formed. (The amount that the rock contained when it was formed can be deduced from the presence of the decay products of u-238 .) How old is the rock?
one mole of an ideal gas at 298k first doubles its volume during isothermal expansion and then returns to its original
The CCl4 formed in the first step is utilized as a reactant in the second step. If 7.00 mol of CH4 reacts, Explain what is the total amount of HCL produced. Presume that Cl2 and HF are present in excess.
Nitrogen and hydrogen react together to form ammonia according to the equation:___N2(g) + ___H2(g) → ___NH3(g) (unbalanced)Balance the equation, and determine how many grams of hydrogen would be required to form 25.0 g of ammonia, assuming there is s..
For a 5.0 gram sample of each of the following, what weight of water will be lost if the sample is heated to constant weight: CoCl?*9H?O; CuSO?*5H?O; ZnSO?*4H?O; BaCl?*2H?O.
What are secondary bonds? What is the driving force for formation of such bonds? Give examples of materials in which such bonds exist.
what is the complete mechanism and product for reacting phthalimide
125 mg of a protein is dissolved in 10 ml of water. the density of this solution is 0.789 gml. this is placed in
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