Sr-90, a radioactive isotope, is a major product of an atomic bomb explosion. It has a half life of 28.1 year. Calculate the first order rate constant for this nuclear decay and the fraction of 90Sr that remains after 10 half lives?

0 Answers   Wipro,

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WHAT IS THE SYLLABUS OO GROUP -I?

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what is an Amphipathic protein?

3 Answers  

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what are the different by which a new molecule can be characterised ?

2 Answers   Cipla, Reddy Labs,

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What is the requirement to give RFlow when using RID detector?

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What is emf and how is it used to arrange Metals in Reactivity Series?

3 Answers  

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2day science says that clouds r formed due to sea(more than 90% sea water in cloud). but when rain starts,,,,the rainy water is sweet while sea (salty)water is salty.....how sea water is converted into sweet water?

1 Answers  

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The rate constant for the second order reaction is 0.54/M.s at 300oC. How long (in sec) would it take for the concentration of NO2 to decrease from 0.62M to 0.28 M? 2NO2(g) 2 NO(g) + O2(g)

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What is the brigg's raucher reaction?

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if water is mixed with mercury what causes with thier suspension property is it increses,decrease or average?

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During Soundness testing of Cement by Lechatelier method the Cement mould expands about 20 mm when merged in curing water for 24 hours after mould preparation.In that Cement MgO content is about 3.0%,SO3 is about 2.6% & Blaine is about 360 M2/Kg.Guess the reason & suggest solution.

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what is earthing?

1 Answers   Marksans Pharma,

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