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DEAR SIR
ASPHALTENE IN CRUD OIL IS EMULSIFIER BETWEEN WATER AND CRUD OIL BUT IN CRUD OIL FOR SEPERATE WATER FROM CRUD OIL WE ADDED DEMULSIFIER .BUT DEMULSIFIER IS SAME AS EMULSIFIER IN CHEMICAL FORMULA.CAN YOU EXPLAIN ME HOW DEMULSIFIER ACT THIS CASE?BECAUSE ASPHALTENE IS EMULSIFIER?
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dear sir
if i determine H2S IN CRUD OIL VIA DRAGER TUBE I CAN POUR 250 CC CRUD OIL IN TO 500 CC BOTTLE AND IT PUT ON WATER BATH 60 CENTIGRADE AND STIRRED THEN DETEMINE H2S BY DRAGER TUBE FROM VAPOUR PHASE BUT MY QUESTION IS HOW TO CALCULATE mgH2S/m3 vapour from drager tube to mgH2S/Kg(LIQUID) SAMPLE?CAN HELP ME ABOUT CALCULATION DETAIL?
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What is the mass of sodium nitrate (85.00 g/mol) that releases 2.55 L of Oxygen has at STP
The atomic structure was a triumph to science in general. In the late 18th century and the beginning of the 19th century, the discovery of the subatomic particles, the electron and the proton and the neutron shed light on the particles that constitute the atoms. This task is related to the atomic structure studies.
Task 1:
1) Discuss how are elements, compounds, neutrons, protons, atomic number ,mass number and isotopes are related under structure and bonding (15 marks)
(Information should include the interrelationship between the structure and bonding in elements all in detail)
2) Consider the element selenium. Samples of natural selenium contain 6 stable isotopes. In terms of atomic structure; explain what theses isotopes have in common and how they differ from each other. (15 marks)
(Information should include all the details about the 6 isotopes)
3) Hydrogen peroxide has both a higher viscosity and a higher boiling temperature than water. Discuss some factors about this behavior with the help of principles of atomic structure.
(Report should contain at least 5 reasons) (10 marks)


The ozone layer refers to a region of Earth's stratosphere that absorbs most of the Sun's UV radiation. It contains high concentrations of ozone (O3) relative to other parts of the atmosphere, although it is still very small relative to other gases in the stratosphere. The ozone layer is mainly found in the lower portion of the stratosphere, from approximately 20 to 30 kilometers above Earth.

Task 2:
1) Some of the oxygen in the atmosphere is in the form of ozone (O3). Scientist believe that chlorine radicals are destroying ozone.Collect information about chlorine radicals and chlorine molecule. (15 marks)
(Information should include details about chlorine radicals and chlorine molecule in detail.
2) Discuss the principal steps in stratospheric ozone depletion caused by human activities and collect information on how the emissions from human activities lead to ozone depletion?

(Information should include at least 10 factors all in detail) (15 marks)




The modern periodic table is arranged into blocks of elements based on their electronic configuration. There are different types of elements available in the periodic table.

Task 3:
1) From the periodic table choose any element and describe the types of bonding orbitals and bonds that comprise C-C and C=C bonds. (15 marks)
(Information should include details of both single and double bond)
2) Discuss the desirable material properties of that chosen element. (15 marks)
(Report should contain at least 10 material properties)
Dear Sir,
I have a question about what are the applications of double displacement reaction in paint & pharmaceutical industry?? 3 or 4 points?
DEAR SIR
I HAVE A QUESTION ABOUT DEMUSIFIER IN CRUD OIL.AS YOU KNOW ASPHALTENE IN CRUD OIL IS EMULSIFIER BETWEEN WATER & OIL.WHEN I ADDED DEMUSILFIER SEPERATE TWO PHASE.CAN YOU EXPLAIN ME MECHANISM DEMUSIFIER?BECAUSE BOTH OF ASPHALTENE AND DEMULSIFIER ARE EMULSIFIER BUT I CAN NOT UNDERESTAND HOW DEMULSIFIERE PREVAIL TO ASPHALTENE(EMULSIFIER).
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Dear sir
in determination H2S in crud oil we used Borax solution 30% to extract H2S from crud oil to borax then acidify with HCl then titration with iodine and thiosulfate sodium.
i want to know why i use Borax ?because i can use NaOH or another base that cheaper of borax
Best regrds
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dear sir
if i determine H2S IN CRUD OIL VIA DRAGER TUBE I CAN POUR 250 CC CRUD OIL IN TO 500 CC BOTTLE AND IT PUT ON WATER BATH 60 CENTIGRADE AND STIRRED THEN DETEMINE H2S BY DRAGER TUBE FROM VAPOUR PHASE BUT MY QUESTION IS HOW TO CALCULATE mgH2S/m3 vapour from drager tube to mgH2S/Kg(LIQUID) SAMPLE?CAN HELP ME ABOUT CALCULATION DETAIL?
BEST REGARDS
TONE
DEAR SIR
I HAVE A QUESTION ABOUT H2S DETERMINATION IN CRUD OIL.IF I POUR 250ML CRUD OIL IN BOTTLE 500 CC AND HEATED IN BATH ROOM (60 CENTIGRADE) THEN I MEASURE H2S CONTENT WITH DRAGER TUBE IN mgH2S/m3 .how to related mgH2S/m3 vapour to mass of sample as mgH2S/kg solution?
best regards
TONE
why is it that when a gas and liquid (of the same substance and amount) are compressed , the change in volume is much smaller in the liquide than in the gas
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