How can be set a responds factor for evaluating a unknown impurity by HPLC

1853

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

1209

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.

2469

what are UV rays absorbs slightly?

1561

Write the each half cell reaction and also net cell reaction for a cell

2341

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

1939

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)

2068

what does 50 denote in dowex 50 ????

2029

. 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)

5912

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

908

The use of vermilion on rubric of the Tartar Relation is confirmed by the presence of three lines attributed to HgS. Why should this diatomic have more than one vibrational line?

2104

What can be the supporter of combustion except oxygen.

2284

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

1709

WHAT IS THE SYLLABUS OO GROUP -I?

1652

How to accelerate electron capture decay?

1779