Nuclear fission produces no greenhouse emissions (Alexander 1). This is also good for our atmosphere (Alexander 1). As nuclear energy is produced, there are no sulfur dioxide or nitrogen oxides being produced with it, unlike the burning of fossil fuels (Rastogi 1). These oxides can cause acid rain which is very bad for the environment
Discusion In this experiment the welding process for Gas Metal Arc Welding for MIG are unable to conduct because of the welding lab does not have inert gas. MIG is use the inert gas such as argon, helium and so on to operate. So that, the technician cannot prepare the welding process for MIG or know as Metal Inert Gas welding. MIG welding is the awesome process of using electricity to melt and join pieces of metal together. MIG welding is sometimes referred to the ‘hot glue gun’ of the welding world and is generally regarded as one of the easiest type of welding to learn.
Nuclear fission only produces steam from the power plants, causing no harm to the environment. However nuclear power is less clean before and after production. Uranium atoms are split in a series of nuclear reactions to produce a surge of heat energy which boils water, to produce steam which turns turbines, powering generators to form electricity. The uranium must be mined from other sites however and be transported to the plants, which can mean expensive importing costs, and the environmental cost of carbon dioxide produced in the transport of uranium. After production, the radioactive waste produced in nuclear power is incredibly harmful and can take years to decay and no longer be radioactive.
The consequence is that only special values of radius and energy are allowed. The mathematical appendix explains how to calculate these values. According to classical electrodynamics, a charge, which is subject to centripetal acceleration on a circular orbit, should continuously radiate electromagnetic waves. Thus, because of the loss of energy, the electron should spiral into the nucleus very soon. By contrast, an electron in Bohr's model emits no energy, as long as its energy has one of the above-mentioned values.
Due to their low ionization energy, these metals have low melting points and are highly reactive. The reactivity of this family increases as you move down the table. Alkali metals are noted for how vigorously they react with water. Due to this, they are often stored in mineral oil and are not found in their elemental forms in nature. These characteristics can be explained by examining the electronic structure of each element in this group.
(Add in about collisions in a wire look at page 131 in physics textbook) What is Resistance? Electrical resistance is how a material opposes to the flow of electric current (or the flow of electrons) running through it. We measure resistance in Ohms Ω Basically electrical resistance is near enough equivalents to friction that occurs in a mechanical system. You would get an infinite current if you were to apply a voltage to current with zero voltage. All currents will have some resistance which limits the current.
This field is said to be active and frequently interrelating with the solar wind and channelling plasma into Mercury’s surface from the sun. The chemicals captured from the solar wind include Hydrogen and Helium, which help create Mercury’s extremely thin atmosphere. Scientists would argue that there is ‘no’ atmosphere on Mercury at all. The little amount of gas found on Mercury is trillions of times thinner than the gasses found on earth, and would not be able to be detected without exceptionally sensitive equipment. Although very thin, Mercury’s atmosphere is made up of trace amounts of gasses including 42% Oxygen, 29% Sodium, 22% Hydrogen, 6% Helium, and 0.5% Potassium.
The only ore that contains chromium is the mineral chromite, which is iron magnesium chromium oxide. Chromite has a high melting point and a stable crystalline structure. The purpose of this experiment is to determine the chemical content of an unknown metal ore sample to confirm that the unknown sample is mineral chromite. The content of the unknown sample will be determined by the use of a type of extractive metallurgy that uses the chemistry of an aqueous solution to remove metals from salts, minerals, and ores. This type of extractive metallurgy is called hydrometallurgy.
However, if the sample does not contain all of these, then it cannot be chromite. Experimental: All participants in the experiment must be wearing safety glasses, long pants, closed toe shoes, and a shirt. The sample may be mineral chromite. Tests should be done to determine if the sample contains magnesium, iron, and chromium (chromite’s components). A spectrophotometer may be used to determine if iron and chromium are in the sample, but magnesium neither absorbs nor emits light energy in the 200-900nm region of the spectrum so it can not be determined by a spectrophotometer.
Freezing Point Depression Dauda Sheriff CHM 152 TH 04/ 14 /2011 Abstract The freezing point of the solvent was used to determine the molar mass of the unknown. By plotting temperature versus time represented by a graph, the cooling curve reflected the difference between a pure substance and a solution. Based on the cooling curve, the pure substance took less time to freeze than the contaminated solution. The gram formula weight was used to calculate the molar mass of the unknown, which was Introduction The five phases of matter are: A solid is matter in which the molecules are very close together and cannot move around. Examples of solids include rocks, wood, and ice.