Hydrochloric Acid Rate Laws Introduction The purpose of this demonstration is to investigate the effect of sodium thiosulfate concentration on the rate of reaction of sodium thiosulfate with hydrochloric acid. The reaction‚ which produces solid sulfur‚ will be followed by measuring the time needed for the reaction mixture to become opaque. The results will be analyzed graphically to determine the order of reaction— the mathematical relationship between the reactant concentration and the rate.
Premium Chemical reaction Rate equation Sulfur
The Elizabethan Era Medicine and Alchemy The medicinal practices and problems of the Elizabethan Era were very important to the people‚ although they are very different from those of today. There were many different beliefs and diseases‚ like the Plague. Medicine was not an exact science and was related to Alchemy (Chemistry). Here‚ some of the many practices and beliefs of the Elizabethan Era will be discussed. One of the most widely known and important of the beliefs was the humours. It
Premium Sulfuric acid Alchemy Classical element
is released by volcanoes and in various industrial processes. Have you guys ever had the chance of being close to a volcano? I went to a geothermal park in New Zealand and once I came into the gate of the park‚ my nose is filled with the smell of sulfur‚ like the smell of rancid eggs. PPT 5 Here is a question. Have you ever noticed that the old things‚ such as pure white newspaper gradually become off-white? Or the stylish straw hat you got at last year become a little bit yellow which made
Premium Chlorine Color Bleach
moles of potassium iodide? Mol( grams 4. How many moles are contained in 84.2g of potassium sulfate? 5. Calculate the number of molecules in 3.34 moles of carbon dioxide. 6. What is the mass of 3.01 x 1023 atoms of sulfur? 7. What is the mass of 2.41 x 1024 molecules of water? 8. What is the formula mass (molar mass) of ammonium nitrate? 9. How many moles are in 56.2 grams of bromine gas? 10. What is the mass of 2.67 moles of
Premium Oxygen Ion Carbon dioxide
• The equilibrium law DYNAMIC EQUILIBRIUM forward A +8 reaction ""r=====~’~ reverse reaction Most chemical reactions do not go to completion. Once some products are formed the reverse reaction can take place to reform the reactants. In a closed system the concentrations of all the reactants and products will eventually become constant. Such a system is said to be in a state of dynamic equilibrium. The forward and reverse reactions continue to occur‚ but at equilibrium
Premium Chemical reaction Thermodynamics Chemical equilibrium
Environmental Chemistry Assignment 3: Acidity in natural water may be caused by several factors. Describe these factors and explain how they contribute to the acidity of water. The acidity in natural water can be caused by the bedrock and soil composition of the area around the stream. This factor can be considered as one of the most important factor that influence the pH of the water. Soils contain calcium‚ limestone and a layer of sand or gravel with a granite base. The calcium and limestone
Premium Oxygen Sulfur
mixture of iron filings and water .................. (e) zinc sulfate crystals from aqueous zinc sulfate .................. (f) hexane from a mixture of the liquids‚ hexane and octane .................. [1] [1] [1] [1] [1] [1] [Total: 6] 2 Selenium and sulfur are in Group VI. They have similar properties. (a) One of the main uses of selenium is in photoelectric cells. These cells can change light into electrical energy. (i) Name a process which can change light into chemical energy.
Premium Sulfuric acid Zinc Oxygen
MONOLOGUE FOR AN ONION: AN ANALYSIS Cutting an onion breaks cells in its skin causing a reaction that results to the formation of volatile sulfur compound which‚ when mixed with tears coating our eyes‚ becomes sulfuric acid. This triggers the tear ducts to produce more tears to alleviate the imbalance in acidity the irritant has caused; the longer the eyes are exposed to the acid the greater the quantity of tears produced. Sue Kwock Kim uses this certain property of an onion to tackle a specific
Premium Truth Tears Sulfur
Sulfa drug. When scientists isolated the active part of the prontosil molecule they discovered how it and all sulfa drugs work. Sulfa drugs contain a sulfur atom that has six total bonds (shared electrons) and six electrons of its own; this breaks the octet rule which states that atoms try to acquire eight electrons in their outer shell (not 12). Sulfur (and phosphorus) is element 16 on the periodic table; its elections are far enough to pond relatively freely with other atoms but close enough to be
Premium Antibiotic Bacteria Antibiotic resistance
production of coal‚ a major industry in China‚ emits sulfur compounds‚ carbon and other byproducts into the air‚ which increases the risks of cancer‚ lung and heart issues. “Sulfur dioxide produced in coal combustion poses an immediate threat to the health of China’s citizens‚ contribution to about 40‚000 premature deaths a year” (Bradsher and Barboza). This not only affects the physical welfare of workers but anyone who is exposed to this tainted air. Sulfur dioxide emitted from coal combustion also contributes
Premium Industrial Revolution Coal Life expectancy