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

2385

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.

3046

what is the difference between elctrefining and electrolysis?

2221

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?

6220

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

2891

. 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)

6617

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

3393

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

5172

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

2453

a sample of gas occupies a volume of {450.0 ml}at {740 mm Hg}and[16C]determine the volume of this same sample at [760 mm Hg]and [37c]?

4995

what are UV rays absorbs slightly?

2153

What is the brigg's raucher reaction?

2318

How to accelerate electron capture decay?

2344

Find out how to make artifacts the maxwell boltzmann theory of gases . ps. I don't speak English that well

1539

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

3053