In all, based on the observations made throughout this part of the experiment and discussed in the results above, the confirmation of silver was justified since lead and silver each have distinct characteristics and unique responses that were expected to occur with each reagent. The observations that would have been made if lead was present, such as the critical formation of yellow precipitate when K2CrO4 was added, was negative. However, the results that were expected if silver was present were
Synthesis and Characterization of K2[Ni(CN)4] , K3[Fe(C2O4)3] and Cu(acac)2 complexes(IV , V and VI) with different structures and Properties 1. Introduction The aim of this experiment was to synthesize HgCo(SCN)4 , [Ni(en)3]S2O3 , NiCl2(PPh3)2 , K2[Ni(CN)4] , K3[Fe(C2O4)3] and Cu(acac)2 but only K2[Ni(CN)4] , K3[Fe(C2O4)3] and Cu(acac)2 were synthesized and explained in this report. Characterization was then done on each of the 3 synthesized complexes by obtaining their UV-Vis spectrum.
say to one another. They are talking about this drug named K2. It is becoming a trend in most teenagers. Teenagers are being admitted to the hospital more often now. They have found something that is legal and can buy around there home town or over the internet. Parents have never heard of this stuff before. It is scary to think that you cannot even tell if a child is taking K2 because there is no drug test to tell you. I think that K2 is worse than the real marijuana. There are symptoms that
Kinetics of Enzyme catalysed reactions: Enzyme kinetics deals with the rate of enzyme catalyzed reactions. This provide information about several important aspects such as:- i)Specificity of enzyme ii)Mechanism of enzyme action iii)Parameters which characterize the physical properties of enzymes. In order to understand enzyme kinetics, it is important to understand Vmax and Michaelis-Menten constant. The rate of reaction catalyzed by an enzyme
The rate law or rate equation for a chemical reaction is an equation that links the reaction rate with concentrations or pressures of reactants and constant parameters (normally rate coefficients and partial reaction orders).[1] For many reactions the rate is given by a power law such as where [A] and [B] express the concentration of the species A and B, respectively (usually in moles per liter (molarity, M)). The exponents x and y are the partial reaction orders and must be determined experimentally…………
osteoporosis is a person, so removing one of the problems with adequate vitamin K will surely help. There were two studies showing the benefits of Vitamin K1 and K2 as well as the usefulness of a vitamin K supplement in a group package so that it works to its fullest capacity. It has a long way to go but supplementation of Vitamin K1 and K2 have the definite possibility to halt the onset of osteoporosis in postmenopausal women.
advantage for the company. It focuses on providing most innovative and high quality products to the customers. PST Brand -K2-tape is manufactured by using patented adhesive technology and high quality materials. It also uses polyester backing which results in very high tensile strength and tear resistance. Some of the company’s values are mentioned under: Even with premium pricing, K2 products are competing overall cost by their remarkable performance. Its exceptional performance under wide ranging
Approximating Solutions for Differential Equations A differential equation is defined as an equation which relates an unknown function to one or more derivatives. When solved and transformed into its original equation in the form f(x), an exact value can be found at any given point. While some differential equations can be solved, it is important to realize that very few differential equations that come from "real world" problems can be solved explicitly, and often it is necessary to resort to numerical
domain and especially in XML association rules mining. Thus, the significance of the suggested model sets and open new dimension to the academia in order to control the sensitive information in a more unyielding line of attack. Keywords: XARs, PPDM, K2 algorithm,Bayesian Network, Association Rules I. INTRODUCTION I n data mining, trends and patterns are identified on a huge set of data to discover knowledge. In such analysis, varieties of algorithms exist for extracting knowledge such as clustering
Three Cups of Tea, written by David Relin and Greg Mortenson, is a story about Mortenson's mission to provide education to children in Pakistan and Afghanistan after he stumbles across a village during a climbing expedition. Supposedly this is a true story. However, Jon Krakauer, author of Three Cups of Deceit, writes to uncover the truth behind Mortenson's story. Although some of the events have been proven as true, Krakauer has found that several others have been exaggerated. The credibility of
one. Along with data normalization, another model that depicts the amount of moisture absorption is the Peleg equation. The Peleg equation relates the amount of moisture absorption to the k1 and k2 values that describe the rate of hydrolysis. The k1 value relates to the initial absorption rate, whereas the k2 value relates to the maximum attainable moisture
cisplatin is very well established and is one of the most classic examples of synthesis in inorganic chemistry (figure 1). Dhara reported in 1970 “A rapid method for the synthesis of cis-[PtCl2(NH3)2].”8 The starting material, K2[PtCl4], is treated with excess of KI to be converted into K2[PtI4]. The product is subsequently treated with NH3 to obtain yellow colored cis-[PtI2(NH3)2] that is collected and dried. cis-[PtI2(NH3)2] is then dissolved in AgNO3 to precipitate out AgI that is removed. The solution
simple ratio of the components of the double salt. The mole values were as follows; 1.631 mole SO4, 4.718 mole H2O, 1.580 mole K, 1 mole Ni2+. These values were rounded to their nearest whole number, creating the empirical formula of the double salt, K2 Ni (SO4)2 (H2O)5. It was instructed to use the empirical formula as the molecular formula,
Investigation of elasticity AS1b SE FC Sheffield International College James Bott Group: FS13 student no. 10838 Introduction When the object is loaded through spring freely that can be considered as elasticity. The simple elasticity consists of a mass, a mass hanger, a steel spring and a retort stand. There are two forces, which affect the spring. The first force is gravity which is the force exerted by the gravitational field of a massive object on body within the vicinity
assume the two springs are originally the same length and the extensions are the same in both springs. So this means that T1 = k1x and T2 = k2x. So by knowing this, you get the formula: F = k1x + k2x = x (k1 +k2). So overall, the spring constant for the two springs is k1 + k2. For the graph, my prediction is the same as for a single spring as mentioned earlier but with a different constant. Springs In Series: In this diagram, T1 is the tension in spring 1, and T2 is the tension
This article was published on the Scientific Daily on the 23rd of December. It was about the discovery of two brown dwarfs by scientists Alex Wolszczan, Evan Pugh, and Penn State. Brown dwarfs are objects in space that sit between the lines of being a star and a planet. This object is dim and hard to distinguish from low mass stars at the early stages of the dwarf’s life. They are often called failed stars because they start their life the same way as regular stars. However, in some stage, they
Many people seem to think that math is a stagnant, nite eld consisting of algebra and geometry (the lesser of the math evils), and the dreaded, unspeakable others: mainly trigonometry and calculus. While these are the without question the dominant topics covered in high school, any person who has pursued math beyond that required level learns that math is in fact, an in nite and expanding eld (pun intended). To illustrate this point, this paper will explore the relatively recent, burgeoning topic-within-a-topic
dN1/dt= r1N1 ((K1- [N1+α12N2])/N1) Effect of species 1 on species 2: dN2/dt= r2N2 ((K2- [N2+α21N1])/N1) Where N is the number of individuals in the population, K is the carrying capacity, α12 is the effect of species 2 on species 1, α21 is the effect of species 1 on species 2 and r is the rate of intrinsic increase (Begon et al. 2009). The initial values used for the parameters were: r1= r2=0,1 ; N1=N2= 50 ; K1=K2= 100 ; α12= 0,5 ; α21= 0 To see whether these results are accurate, a ... ... middle
Introduction: One of the well known problems of reciprocating engines is the up and down movement of pistons (reciprocating motion) which has to be converted into rotary motion of wheels. This movement of pistons created a lot of vibration and difficulty in balancing the engine. So a new engine was created by a German Engineer Felix Wankel (patented the design in 1929 and completed a working prototype in 1957 in collaboration with NSU Motorenwerke, a German automobile manufacturer). Wankel engine
“m dv/dt=-mg-kv v(0)=0” (Wherek=k_1) This can be re arranged to dv/dt=-g-Dv/m, if we make –g the subject dv/dt+kv/m=-g If we let only dv/dt and v be left in the equation and swap out all the other terms we can use an integrating factor. dv/dt+vL(t)=N(t) Where L(t)=k/m and N(t)=-g This means v=1/u ∫▒〖N(t)u dt〗 Where u=e^∫▒L(t)dx =e^(k/m) dt =e^(k/m t) This in turn means v=e^(-k/m t) ∫▒〖(-g)e^(k/m t) dt〗 or e^(k/m t) v=∫▒〖(-g)e^(k/m t) dt〗 e^(k/m t) v=(-gm)/k e^(k/m t)+C To