the β carbon and it differs from valine by replacement of a methyl substituent with a hydroxyl group. Note that both the α and β carbons of threonine are optically active. Cysteine is one of two sulfur-containing amino acids; the other is methionine. Cysteine differs from serine in a single atom-- the sulfur of the thiol replaces the oxygen of the alcohol. The amino acids are‚ however‚ much more different in their physical and chemical properties than their similarity might suggest. Consider‚ for example
Premium Amino acid
IRON AND SULFUR) Cu2S(s) + flux solution + O2 (g) + heat (furnace) Fe(s) +flux slag (silica flux chemically binds with Fe‚ and removed) Slag O2(g) +S(g) SO2 (g)(S combines with O2 and is released through exhaust) SO2(g) Cu2S(s) +FeS(s) Cu2SFeS(s) (60% copper sulphide 40%iron sulphide) CONVERTING (removing of remaining traces of Iron and Sulfur) Cu2SFes(s)
Premium Copper Smelting Iron
cleanup process in the chemical industry. Several desulfurization methods‚ such as dry-‚ semidry- and wet-processes‚ have been proposed. The wet desulfurization method is the main technology used [1] due to larger treatment volume‚ easier recovery of sulfur and more
Premium Electrochemistry Chemical engineering Hydrogen sulfide
nitrogen 78% - oxygen 21% - co2 0.04% - argon 0.9% - other gases v small amounts gas levels - co2 rises due to burning fossil fuels + deforestation - co rises due to incomplete combustion of fossil fuels - so2 rises due to volcanoes + burning sulfur impurities - methane rises due to cattle waste gases - nitrogen oxides rise due to lightning + car engines rocks - igneous formed when magma or lava cool to form solids - large crystals mean the rock cooled slowly - small crystals mean the
Free Carbon dioxide Oxygen Carbon
With each eruption‚ volcanoes have the potential to eject large amounts of ash‚ gases‚ and sulfuric aerosols into the upper troposphere and stratosphere (Allen‚ 2015). Volcanism helped form Earth’s ancient climate and influences climate change in today’s world (Kasting‚ 1993). A recent example of a volcano influencing climate include the 1982 El Chichon eruption in Mexico‚ which is regarded as the largest volcanic disaster in modern Mexican history (Mass‚ 1989). Ancient examples of climate-changing
Premium Carbon dioxide Global warming Greenhouse gas
Twenty-six hundred meters below our world of light‚ through the murky depths‚ resides a world completely alien to our own. It was not until 1977‚ when the first manned submarine was able to enter such depths and explore this oasis of life that resides around the earth ’s nourishing thermal vents. Here‚ a vast community of organisms thrive under very harsh circumstances‚ and most importantly‚ in the absence of life-giving light. How is this possible? Chemoautotrophic microbes. Chemoautotrophic bacteria
Premium Ocean Oceanography Earth
College of food science &technology‚ bapatla-522101 CERTIFICATE Certified that this is a bonafide record done in B.tech(food technology) by S.CHITRA SAI‚ BF-09-011
Premium Petroleum Oil refinery
Qualifications Authority. 2 You are advised to spend 35 minutes answering the questions in this booklet. QUESTION ONE (a) Sodium thiosulfate solution reacts with dilute acid to form a precipitate of sulfur‚ and sulfur dioxide. S2O32– + 2H+ → S + SO2 + H2O (i) Give the oxidation numbers for sulfur in the species below. S2O32– (ii) S SO2 . Assessor’s use only Write balanced half-equations for the oxidation and reduction reactions. Oxidation Reduction (b) Oxalic acid (H2C2O4) reacts with
Premium Electrochemistry Potassium permanganate Hydrogen
What comes to mind when you think of coal mining? If you’re like me‚ coal mining means living in darkness and a cold hearted industry. Other words that come to mind are poverty and oppression. Coal mining is not a job that you dream about or get a degree for. People who are coal miners do not chose a life full of danger and repression‚ they get stuck with it. There are many dangers that come along with coal mining‚ not only for the workers‚ but for the environment. Coal mining and the coal industry
Premium Coal Air pollution Coal mining
certain compounds into the air‚ including sulfur dioxide and nitrogen oxides. These compounds mix and react with chemicals such as oxygen and water and form acid rain. 3. Acid rain can harm the environment by acidifying lakes and streams‚ which greatly affects the water life. It also causes damaged to tall trees and soil. 4. Acid rain makes buildings affected decay quicker in their materials and paints. 5. Acid rain has the most effect in areas where sulfur dioxide and nitrogen oxides are present in
Premium Oxygen Ozone depletion Ozone layer