The costs of silicon will vary depending on the purity of the silicon. For 100g of 99% pure silicon you would pay about $36. For the same amount at 99.9999% purity you would pay about $273. The value of aluminum scrap metal varies with the stock market. At some point it may be worth 50 cents while at other times it may be closer to a dollar. The valued rate of aluminum scrap on December 12, 2011 was .9369 or approximately 94 cents per pound. Right now copper is worth $3.3375-$3.3511 per pound.
Words: 263 - Pages: 2
David O. Johnston David Lipscomb College I II The Methclnolysir of Acetal A chemical kinetics a n d g a r chromatography experiment Nashville, Tennessee The methanolysis of acetal and gas chromatography complement perfectly to provide a rare and interesting experiment for the physical chemistry student. The reaction of acetal with methanol is a consecutive reaction in which diethyl acetal (aretal) replaces its two ethoxy groups with methoxy groups forming methy1et)hylacetal first
Words: 1703 - Pages: 7
“Kent chemical: Organizing for Internal Growth” The case “Kent chemical: Organizing for Internal Growth” by Barlett and Wining shows the development of Kent Chemical, a US-based company, from a local rubber producer into a multinational chemical firm which main product divisions are plastic additives, fire protection products and medical plastics. In order to become one of the leading chemical companies in the world, Luis Morales, the president of Kent Chemical, is struggling, after two unsuccessful
Words: 1332 - Pages: 6
4/15/2015 BIO156 Lab 2 Print Lab 2 Biological Molecules and pH Introduction: Connecting Your Learning Biological organisms, like all things, are made up of elements. These elements combine to form organic molecules that create the basis for life. The main elements found in biological organisms include carbon (C), hydrogen (H), phosphorus (P), nitrogen (N), and oxygen (O). This lab describes how these elements form some of the most important molecules in life: carbohydrates, proteins
Words: 3270 - Pages: 14
Why are we concerned about whether atoms are reactive or not? 5. What determines whether a particular element (type of atom) is reactive? 6. Understand the difference between inert elements and those that are reactive and capable of forming chemical bonds. What is the significance of the valance shell of electrons? 7. Why do atoms seek to form bonds with other atoms? How does this correlate with their stability? 8. Understand the nature of ions and ionic bonds. Why is sodium able to
Words: 662 - Pages: 3
Abstract: Introduction: Materials: 12 x 5 cm3 plastic tubes 2 x 5 cm3 graduated pipette 1 x 20 cm3 of stock NADH (80 g cm-3) 1 x 20 cm3 of 50 mM phosphate buffer pH 7.2 2 x semi micro cuvettes Distilled water wash bottle Access to a Whirly mixer Access to Novaspec digital spectrophotometer 1 x 5 cm3 of a solution of NADH of unknown concentration. Method: 1. Using the protocol depicted in Table 1 set up 6 standard concentrations of NADH in buffer ranging from 0 to 80
Words: 333 - Pages: 2
Chapter 2 “The Chemistry of Life” Worksheet ANSWERS Section Review 2-1 1. Protons; neutrons 2. electrons 3. neutrons 4. electrons 5. ionic 6. The two main types of chemical bonds are ionic and covalent bonds 7. At atom becomes an ion when it gains or loses electrons 8. Electrons and protons are both subatomic particles; however, they have different charges and locations within the atom. 9. When atoms are joined together by covalent bonds, the structure that
Words: 429 - Pages: 2
Specialty Chemicals Defined: Specialty chemicals are a category of relatively high valued, rapidly growing chemicals with diverse end product markets. Typical growth rates are one to three times GDP with prices over a dollar per pound. They are generally characterized by their innovative aspects. Products are sold for what they can do rather than for what chemicals they contain. Products include electronic chemicals, industrial gases, adhesives and sealants as well as coatings, industrial and
Words: 457 - Pages: 2
SCH 4U Exam Review Unit 1 - Electrochemistry 1. If Ag+ (aq) + e- Ag (s) was chosen as the standard for half-cell potentials, what would be the half-cell potential for Ni2+ (aq) + 2e- Ni (s)? 2. 3Ca (s) + 2Al(NO3)3 (aq) 3Ca(NO3)2 (aq) + 2Al (s) a) Predict the voltage for an electrochemical cell based on the above reaction. Assume standard conditions. 3. Use the Eo values to determine if the following reaction is spontaneous or not: Mg2+ (aq) + Cu (s) Mg (s)
Words: 1549 - Pages: 7
