At a constant temp. volume is inversly proportional to pressure. This is Boyle's law. But, when u give pressure to a football, how the volume also increases?
1 39022day 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 3532Normally entropy is expressed as q/T. But, work and heat have same unit. Why can't it be replaced by work?
1778why we are carrying standardization of karl fisher auto titrator with water and disodium tartarate.
1 4836During 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.
2549As per X-ray Fluorescence theory, when material particle is irradiated with X-ray the electron of innermost orbital of that element atom is exited and emits outside of the atom as photoelecrons, living behind a hole in innermost orbital . This hole is filled by outer orbital electrons. The question is that finely what happens to that photo electon which is emitted outside of the atom?
1 3417In testing of Cement the formula for water requirement for setting time is as below- Water required for setting time = NC x 0.85 The question is that what is the logic of 0.85 in this formula??
2030Sr-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?
5719Post New Physical Chemistry Questions
what is allowable limit Of stray light for a spectrophotometer laboratory instruments ?
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]?
Normally entropy is expressed as q/T. But, work and heat have same unit. Why can't it be replaced by work?
what are UV rays absorbs slightly?
4 Identify the substance oxidized, reduced, oxidizing agent and reducing agent for the following reactions
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?
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.
In testing of Cement the formula for water requirement for setting time is as below- Water required for setting time = NC x 0.85 The question is that what is the logic of 0.85 in this formula??
How can be set a responds factor for evaluating a unknown impurity by HPLC
. 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)
What is the brigg's raucher reaction?
What is the requirement to give RFlow when using RID detector?
How to accelerate electron capture decay?
what is the difference between elctrefining and electrolysis?
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?
