Answer Posted / sonu

we have the formula,
absorbance=molar extinction
coefficient*cocentration*length of tube cotaining the
solution

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.

3079

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what are UV rays absorbs slightly?

2177

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why athanol-water mixtuere have maximum viscocity in wt% 40?

1729

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

3082

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4 Identify the substance oxidized, reduced, oxidizing agent and reducing agent for the following reactions

2487

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what is allowable limit Of stray light for a spectrophotometer laboratory instruments ?

1515

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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)

2597

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what kind of question can be asked in interview for UV- VISIBLE & give me answer ?

3848

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Why does the experimental lattice enthalpy of NaI differ greatly from the theoretical lattice enthalpy?

3419

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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?

6249

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Normally entropy is expressed as q/T. But, work and heat have same unit. Why can't it be replaced by work?

2258

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. Given that 2Hg2+ (aq) + 2 e- Hg22+(aq) E0 =0.92V Hg22+ (aq) + 2 e- 2Hg(l) E0 =0.85V Calculate standard free energy change and K for the following process at 25oC Hg22+(aq) Hg2+ (aq) + Hg(l)

6645

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what kind of question can be asked in interview for polarimeter related ?

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What is the brigg's raucher reaction?

2337

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How to accelerate electron capture decay?

2371

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