BIOPOL Biopol is a biopolymer that is an environmentally friendly biodegradable plastic made from renewable resources (made naturally in plants from starch and glucose). Biopol is the brand name for a group of biopolymers often called PHAs or PHBs. The continual use of petroleum to make polymers for plastic will eventually run out and hence Biopol was introduced as a polymer replacement for petroleum. It is made from an organic substance known as Alcaligenes eutrophus which is a microorganism.
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Arenes The aromatic hydrocarbons also have the name arenes. They contain in their molecule one or more cycles made up from 6 carbon atoms. When the molecule is formed out of a single cycle‚ the hydrocarbons are mono nucleuses; when the molecule contains more than one cycle‚ the hydrocarbons are poly nucleuses. The simplest aromatic hydrocarbon‚ benzene‚ is compound out of just one such cycle; its formula is C6H6. The representation of benzene through a cycle of 6 carbon atoms with 3 double bounds
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Introduction Silver is a chemical element with atomic number 47 and symbol Ag. It is white‚ soft‚ mallable and ductile metal slightly harder than gold. Silver is extremely flexible‚ this means that it can be converted into both flat sheets and electrical wire. This makes silver is an ideal metal for all kinds of industrial use. Silver occurs in lead‚ Zinc and copper ore deposits. Lead ore is the main source of Silver. In fact‚ 75% of the resources in the world are found in association with other
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1) Calculate the value of the gas law constant R when pressure is in atm‚ volume in Liter and temperature in Kelvin. Given R = 8.314 Jmol‐1K‐1‚ 1 atm = 1 .01325x105 Nm‐2‚ 1m3 = 1000 L J R = 8.314 mol x K = R = 8.314 2 m x mol x K R = 0.082 atm x L mol x K 1.01325 x 10 2 m x mol x K 1 x Nxm = mol x K 3 Nxm 3 Nxm 5 atm Nm-2 x 1000 L 3 m Reporting computed data • Multiplication and Division 5.02 x 89.665 x 0.10 = 45
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Chocolate is made from the cacao bean. According to Rodney Lipson‚ “Cacao has been a cultivated crop for at least three thousand years‚ probably quite a bit more. The people who first utilized Cacao were the inhabitants of what is now Venezuela” (Lipson) This group of people would eventually spread the cacao bean in northwestern South America. Cacao was clearly highly valued by these people and they spread it northward through trade with their neighbors. It was probably the Maya‚ over 1500 years
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Curium is highly radioactive. As a metal‚ it is lustrous and silvery. It is malleable‚ chemically reactive and electropositive. Its surface rapidly oxidizes in air‚ gaining a thin film. Most compounds of trivalent curium are stable and faintly yellow or yellow-green. If absorbed in to the body‚ curium accumulates in the bones. Its radiation destroys red blood cell formation. Consequently‚ curium is considered very toxic. Large quantities of curium are now easily made in nuclear reactors. A nuclear
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Alpha amylase is an enzyme that aids in the breakdown of starch and glycogen to form glucose and maltose through the hydrolyses of alpha linked polysaccharides1. Starch is a complex carbon and is the main energy storage material found in plants and some bacteria. It is a major component of food as it supplies plants with energy and carbon. Starch consists of two types of polysaccharides called amylose and amylopectin1.The properties of starch can depend on the number of alpha 1‚4 glycosidic bonds
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Raw Data: Table 1.1: Raw Data Table Temperature (°C) ±0.5 Initial Mass (grams) ±0.001 Final Mass (grams) ±0.001 Initial Volume (cm³) ±0.5 Final Volume (cm³) ±0.5 Pressure (hPa) ±0.5 24.0 0.000 0.072 0.1 60.4 1008.0 24.0 0.000 0.060 0.1 55.9 1008.0 24.0 0.000 0.053 0.1 54.9 1008.0 24.0 0.000 0.044 0.1 45.4 1008.0 24.0 0.000 0.032 0.1 34.3 1008.0 24.0 0.000 0.025 0.1 23.3 1008.0 Table 1.2: Qualitative Data: Before During After Magnesium
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From Wikipedia‚ the free encyclopedia For other uses‚ see Instress (disambiguation). Instress is a concept about individuality and uniqueness derived by Gerard Manley Hopkins from the ideas of the medieval philosopher Duns Scotus.[1] [Hopkins] felt that everything in the universe was characterized by what he called inscape‚ the distinctive design that constitutes individual identity. This identity is not static but dynamic. Each being in the universe ’selves‚’ that is‚ enacts its identity. And
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Lecture 12 Chapter 6 6.1 Thermochemistry: Energy & units (p.227) From observation we know‚ that - some chemical reactions begin as soon as the reactants come into contact with each other (precipitation reactions) - some reactions are slow or even so slow at room temperature that even lifetime is not enough to observe a measurable change (rusting of iron‚ tarnishing silver) Also‚ almost all chemical reactions involve exchange of heat (or energy): in combustion reactions
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