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Knowledge in Bio Chemistry
Respiratory System Anatomy and its component
This document contains important theory based on Respiratory System Anatomy and its component
yash kothane
Salivary gland and its component
This ppt is a very important ppt that cover almost all the topic related to Salivary gland
BIOTECHNOLOGY IN INDIA
This pdf contains important information and material related BIOTECHNOLOGY IN INDIA
Biogas and Biomass- EC
These are the notes of the subject Chemistry for engineering and are targeted to one of the difficult subtopics of Biogas and Biomass. These will prove beneficial to both FY Engineering students of all branches and help them to score good marks in their exams. • Traditionally, biomass had been utilized through direct combustion. Cow dung cake is one of the most important and widely used biomass for the production of daily energy needs. It has been estimated that 2.5 billion people around the world are not being able to access modern fuels. They are highly dependable on locally available wood and cow dung cakes. • About nine-tenth of the rural households in India uses traditional biomass-wood and dung-as a household fuel annually. Burning of biomass or cow dung cakes through direct combustion creates indoor air pollution and ultimately contributing to serious health problems, particularly cancer and respiratory infections. • Approximately half a million premature deaths and nearly 500 million cases of illness are estimated to occur annually as a result of exposure to smoke emissions from biomass use by households in India, making indoor pollution the third leading health risk factor. • Biogas represents a renewable source of energy that derives mainly from the decomposition of organic wastes in the absence of oxygen. In India, biogas mainly produced from cattle dung.
VEDANT MILIND ATHAVALE
FLAME PHOTOMETRY
Flame photometry is the measurement of the emission of radiation by neutral atoms, which tells us about the concentration of that particular element in a given sample. The earliest reference was in 1556 when Georgius Agricola mentioned "colors of fumes" produced by ore samples. In the 19th century new improvements and developments became significant. In 1873, Champion, Pellet, and Grenier invented the flame photometer.
BEER LAMBERTS LAW
1 1. A solution of Tryptophan has an absorbance at 280 nm of 0.54 in a 0.5 cm length cuvette. Given the absorbance coefficient of trp is 6.4 × 103 LMol-1cm-1 What is the concentration of a solution? Solution: As A = ε l c l= 0.5 cm A= 0.54 ε = 6.4 × 103 LMol-1cm-1 C=? So c = A/ε l = 0.54 / 6.4 × 103 × 0.5 Answer = 0.000168 M 2. Calculate the molar absorptivity of a 1 x 10-4 M solution, which has an absorbance of 0.20, when the path length is 2.5 cm. Solution: A = ε l c l= 2.5 cm A= 0.20 C= 1 x 10 – 4 M ε =? So ε = A / l c = 0.20/ 2.5 ×1 x 10-4 Answer = 800 dm3 /mol/cm. 2 3. The molar absorptivity of a 0.5 x 10-3 M solution is 261.53 dm3 /mol/cm, If it has an absorbance of 0.17, Calculate the path length. Solution: A = ε l c ε = 261.53 dm3 /mol/cm A= 0.17 C= 0.5 x 10-3 M l = ? So l = A / ε c = 0.17/ (261.53 × 0.5 x 10-3) Answer = 1.3 cm. 4. A 1.00 × 10–4 M solution of an analyte is placed in a sample cell with a path length of 1.00 cm. When measured at a wavelength of 350 nm, the solution’s absorbance is 0.139. What is the analyte’s molar absorptivity at this wavelength? l = 1.00 cm c = 1.00 × 10–4 M A=0.139 ε =? So A = ε l c ε = A / l c = 0.139/ 1.0 × 1.00 x 10-4 Answer = 1390 cm−1 M−1
Bio Plastic : The Nature's Friend
This document is containing brief discussion on Bio plastic. It will be very helpful document.
Sudarshan Nath
Class 12 biology questionnaire
This is orignal question paper of class 12 board exam biology subject. Biotechnology , reproduction, environment , principles , laws , inheritance , physiology , hormones , enzymes , botony , zoology , problem, solutions , awareness , guide , mapping , evolution, documentary , sciencist
Sajal Mishra
class 10 th chemical reaction
this pdf is consist all the important chemicl reaction wiyh example so please you can download. Alloying, or combining different metals, often produces a chemical reaction. This reaction can cause a change in the properties of the metals, such as increased strength or corrosion resistance. The reaction can also produce a new alloy. For example, when aluminum is alloyed with copper, the reaction forms a new alloy called aluminized copper.
Rohit Lodhi
P block group ELEMENTS
P BLOCK ELEMENTS , CHEMICAL PROPERTIES OF OXIDES AND NITRIDES , BORAX
Pratham Bansal
CARBON FAMILY [ CHEMISTRY]
CARBON FAMILY ,IMPORTANT COMPOUNDS OF CARBON ,SOME GASEOUS FUEL , COMPOUNDS OF SILICON .
VIVEK KUMAR
S BLOCK ELEMENTS [CHEMISTRY]
S BLOCK ELEMENTS , DIAGONAL RELATIONSHIP ,HALIDES,