-X-OI (X\ cW:>J~‚R.S C>(\...t. "’V’(‚ el"\.9\.) k‚ _- _- (3) MgO - :to’Y\\c.. / ~onic-type crystals I a) (5 pts) Using the provided crystal diagram on the next page‚ what is the coordination number ofKBr (show your work for full credit) ifrK+ = 0.133 nm and rSr-= 0.196 nm? eN r (o’/n"’-cY’ 0;.. I‚;‚(\""’" • t ~(.p tI m _ • r‚AY\;--M ’; • (p 7 I b) (15 pts) Using the crystal structure determined from above and the radius values given‚ calculate the ionic packing fraction for
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History of Crystal Meth Crystal meth otherwise known as Amp‚ Crystal‚ and Speed is a highly dangerous drug. Crystal meth was first developed in Japan in 1919. It was used to keep troops awake. Japanese Kamikaze pilots were given crystal meth before their suicide missions. In 1950 crystal meth was used as a defense against depression. It was mainly used by college students‚ truck drivers‚ and athletes. In 1970 the US government declared crystal meth to be dangerous and illegalized it. Effects
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Crystal Cave of Giants The Naica mine is located in Chihuahua‚ Mexico and was first discovered in 1794. The mines primary interest was silver and gold until about the 1900’s when a large-scale mining began as Zinc and Lead become more valuable resources. This is the largest mine in the country that produces lead‚ zinc and silver‚ among other minerals. The entrance is located 1385 m above sea level in the north of the 12km.-long sierra Naica. In April of 2000‚ brothers Elroy and Javier Delgado
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Crystal making lab Purpose: To better understand saturated solutions‚ solubility . Analysis: 2. Why was it necessary to heat the water? Be specific. Heating the water allows it to hold much more borax in solution than it could at room temperature. So after the water cooled‚ the ability of the solution to hold the solute inside decreases‚this causes the excess borax in the solution to precipitate in crystal form on the string.When the water at a high temperature‚ water molecules have more kinetic
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The Function of a Crystal Radio What is the first thing that comes into your mind when you think about the function of the radio? Is the first thing that pops into your mind the word ‘magic’? Despite the fact that it seems like it is magical and comes out of the air‚ radio and the use of the radio is very scientific. When broken down and analyzed‚ the function of the radio is more scientific than magical. The miraculous way that you can send out invisible information through thin air and can
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Before watching the videos on crystal meth I was very uneducated when it came to the drug. After watching the Oprah Winfrey Show and Meth is Death video‚ it was very easy for me to come to the conclusion that crystal meth is a very intense and addictive drug. On the Oprah Winfrey Show‚ Oprah describes crystal meth as being the most dangerous drug in America and the biggest problem officers face concerning drugs. She also says crystal meth is not popular with a particular group of people. Rather
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Crystals are formed when atoms line up in patterns and solidify. There are crystals everywhere — in the form of salt‚ sugar‚ sand‚ diamonds‚ quartz‚ and many more! To make crystals‚ you need to make a very special kind of solution called a supersaturated solid solution. Here’s what that means: if you add salt by the spoonful to a cup of water‚ you’ll reach a point where the salt doesn’t disappear (dissolve) anymore and forms a lump at the bottom of the glass. The point at which it begins
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Santiago and The Crystal Merchant Sometimes changes are required to make life easier when you are struggling. In the novel‚ The Alchemist‚ Santiago suggests that the crystal merchant should change in order to improve his business. When the merchant agrees with Santiago’s brilliant ideas‚ many positive things start to happen. In this part of the novel‚ Santiago had just gotten robbed and he has no way to survive. Desperate for food‚ he offers his assistance to a crystal merchant in exchange
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Oscilations Pendula A pendulum consists of an arm of low mass with a bob‚ which has a higher mass‚ on the end. The top of the arm is pivoted so that the pendulum can swing. A pendulum will continue to swing back and forth indefinately‚ until it is stopped by air friction and friction within the pivot. When the angle‚ á‚ between the stationary line of the pendulum (the line towards which the movement tends) and the line of maximum amplitude of the pendulum is quite small‚ then the time period of
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CHAPTER 1 INTRODUCTION Rotor dynamics is the study of rotating machines and has a very important part to play throughout the modern industrial world. Rotating machinery is used in many applications such as Turbo machinery‚ Power stations‚ Machine tools‚ Medical equipment‚ etc. Failure of machinery in applications such as aero engines‚ turbo-machines‚ space vehicles‚ etc. creates enormous repair costs and more importunately may put human life in danger. Rotor dynamics is a collective terms for
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