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It is given that the half-life of strontium-90 is twenty eight years. calculate How many grams of this nuclide in a sample of 4.00 g will remain after 112 years?

Write a balanced equation, showing charges for the titration of sodium hypochlorite.Procedure: 3ml of 1.0M KI,25ml distilled water, 10ml of (1:10) bleach solution, 2.0ml of 3M H₂SO₄. titrated with standardized Na₂S₂O₃(sodium thiosulfate solution). you just need to calculate concentration of NaClO solution from that equation.

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