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 Categories >> Sciences >> Chemistry
  Organic Chemistry (247)   Inorganic Chemistry (105)   Analytical Chemistry (1003)   Physical Chemistry (57)   General Chemistry (292)
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Question Asked @ Answers Views     Select
why we are adding H2SO4 to ash    0  3
which gas is called laughing gas?    0  6
How would you decide dissolution medium for NCE compound of class I drug    0  7
Which type of column should i use to check the purity of high molecular weight protein using HPLC reverse phase column chromatography? Hi everyone. I wanna to check the purity of high molecular weight protein (collagen) with MW of ~130 kDa using a HPLC. I know C18    0  10
What precaution u take when doing rs preparing    0  41
Difference Between End Cap HPLC Column and Non End Cap Column    0  64
what is the source of ir spectroscopy    1  162
What are modes of quantification in related substances    0  66
What is peak purity and response factor in chromatographic analysis? Why we required to find out response factor?    1  76
why water content test performed    1  247
What is the difference between BD    0  50
what is the concept for adjustment of pH in HPLC buffer solution ? a. Common ion effect b. Counter ion effect and explain me, how we adapt this principles & what is the role of these principles in our method    0  118
Why sucrose used in calibration of polarimeter    0  38
In which cases factor of KF Reaget got higher side    1  163
which one is better separation in high pressure liquide chromatogram orlowpressure chromato gram in hplc    0  97
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Un-Answered Questions
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why phenolpthalin gives pink colour when we titrate aganist sodium hydroxcide & phenolpthalin gives colourless titrate aganist hydrochlric acid which is un burate 1249
4 Identify the substance oxidized, reduced, oxidizing agent and reducing agent for the following reactions 687
if partition coefficient value was positive means, what it indicates ? 316
How to determine water content of bis tetrazole amine mono ammonium salt 1196
can you email me because I have a report and I need you to answer these questions if you would like to if not I completely under stand. 540
Why irmoisture balance is used for corrugated box moisture testing 441
what is partion and column chromatography 419
how to select short coloum and long coloumn for new molecule 358
why we use 254nm for caffeine analysis as it having maxima at different wavelength? 1144
What are the inorganic material eliminated in Sulphated Ash 1181
what is the different in Total ash, sulphated ash, acid insoluble ash, alcoholic or non alcoholic ash? 3280
In burette calibration of Karl fischer Instrument, the multiplication factor 1.00693 is using for how much ml of water dispenced. why 739
can you pls provide chemistry previous papers for the post of trainee chemist in ap genco 891
why hexane is used for FID calibration in GC 778
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