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1. The following nucleus emits B-particles. Write an equation for this reaction and identify the product nucleus. 15EU 2. The following nucleus emits a-particles. Write an equation for this reaction and identify the product nucleus. 23Pu 3.235.Ac is effective in prostate cancer therapy when administered at kBq levels. If an antibody tagged with 235AC has an intensity of 2.0 million Bq/mg and if a solution contains 5.0 mg/L tagged antibody, how many millilitres of the solution should you use for an injection to administer 1.0 kBq intensity? 4. Consider the following reaction shown below at room temperature; 2 H2(g) + S2 (9) = 2 H2S (9) The equilibrium constant, K = 1.10 x 103. A mixture of reactants and products at room temperature contains 0.250 M H2, 0.150 M S2 and 0.500 M H2S. (a) Is this reaction at equilibrium? (b) If not at equilibrium, in which direction does the reaction proceed to reach equilibrium? C) Assuming the reactants remain at the concentrations given, what would the concentration of the product have to be to establish equilibrium? (d) Determine the equilibrium constant for the reverse reaction.