allowing them to be made very light and small. And while zinc air batteries can’t power large devices‚ they offer a steady flow of energy‚ making them good for use in hearing aids and other small devices. Silver Oxide * Silver oxide batteries are similar to others in size. The silver oxide allows them to store more energy. They deliver the same
Premium Battery Volt Rechargeable battery
Assignment On Engineering Materials (Glass) Introduction Glass is a non-crystalline solid material. Glasses are typically brittle‚ and often optically transparent. The most prevalent type of glass‚ used for centuries in windows and drinking vessels‚ is soda-lime glass‚ made of about 75% silica (SiO2) plus Na2O‚ CaO‚ and several minor additives. Often‚ the term glass is used in a restricted sense to refer to this specific use. [pic] [pic]Roman Cage Cup from the 4th century A.D. In
Premium Glass
Report Sheet Experiment 1 0 Balance the equations for the three reactions studied. Note‚ in all reactions the numbers of atoms of each type and the total charge must be equal on each side of the equation. Equations 1) Cu + 4H+(aq) + 2NO3-(aq) Cu2+(aq) + 2NO2 + 2H2O 2) Cu2+(aq) + 2-OH(aq) Cu(OH)2 3) Cu(OH)2 + heat CuO + H2O (Balanced) 4) CuO + H2SO4 Cu2+(aq) + SO42-(aq) + H2O (Balanced)
Premium Chemistry Copper Nitric acid
come from car exhaust are carbon dioxide and nitrogen oxides. If too much nitrogen oxides get put into the atmosphere‚ the balance of the natural amount within the atmosphere can go out of proportion. Nitrogen oxides‚ on the other hand‚ come from burning coal‚ natural gas‚ gasoline and oil. The biggest cause of this gas being put into the air is from car exhausts. In addition‚ gas that is being used in lawnmowers also emits nitrogen oxides‚ however in smaller amounts. Along with those hazardous
Premium Volcano Pollution Carbon dioxide
The production of electricity through the combustion of coal is one of the oldest and cheapest methods to produce electricity. Coal supplies are plentiful and will be available to produce electricity for hundreds of years. While conventional supplies of oil and natural gas are expected to run out in the near future. This has cause a growth in nuclear power. Through out this report one will also learn the disadvantages and advantages to coal burning power plant and how they operate. Coal has played
Premium Coal
greatly reduced the occurrence of industrial smog. However‚ the burning of fossil fuels like gasoline can create another atmospheric pollution problem known as photochemical smog. Photochemical smog is a condition that develops when primary pollutants (oxides of nitrogen and volatile organic compounds created from fossil fuel combustion) interact under the influence of sunlight to produce a mixture of hundreds of different and hazardous chemicals known as secondary pollutants. Development of photochemical
Premium Smog Air pollution Ozone
Basseterre. His financial advisor Tyrah‚ has discovered a new technique for boosting company profit. If the company can cheaply extract the pure form of a new metal M from its oxide‚ the metal could be sold at 3x the price of production. What is the empirical formula of this oxide‚ given the following: Total mass of metallic oxide: 80.763 g Mass of metal is 74 % of the total mass (It was later discovered the new metal held 11 protons‚ 12 neutrons & 11 electrons) 4. Mr. Collins went home and wanted
Premium Molecule Hydrogen Chlorine
succeeded in obtaining an ‘earth’(oxide) from a black mineral subsequently known as gadolinite; he called the earth yttria. Soon afterwards‚ M.H. Klaproth‚ J.J. Berzelius and W. Hisinger obtained ceria‚ another earth‚ from cerite. However‚ it was not until 1839–1843 that the Swede C.G. Mosander first separated these earths into their component oxides; thus ceria was resolved into the oxides of cerium and lanthanum and a mixed oxide ‘didymia’ (a mixture of the oxides of the metals from Pr through Gd)
Premium Periodic table Atomic number Chemistry
References: 1.www.eetimes.com‚ 2.www.EFY.com. ----------------------- [pic] A scanning electron microscope image (top) shows an array of zinc oxide nanowires. Middle image shows a schematic of how an AFM tip was used to bend nanowires to produce current. Bottom image depicts output voltages produce by the array as it is scanned by the probe.
Premium Electricity Solar cell Nanotechnology
Air Pollution To understand pollution of air‚ some knowledge of the atmosphere is required. Atmosphere is a layer consisting of a few gases surrounding the planet earth and is vital for the survival of life on earth. The atmosphere protects earth from abrupt temperature fluctuations from the powerful ultra violet radiation coming from the sun. The atmosphere is made up of nitrogen 78%‚oxygen 21%‚argon 0.9%‚carbon dioxideo0.03% and small amount of trace gases ‚helium ‚neon‚ krypton‚ xenon‚ hydrogen
Free Air pollution Oxygen Smog