The Effect of Molecular Weight on the Rate of Diffusion of Potassium permanganate (KMNO4)‚ Potassium dichromate (K2Cr2O7) and Methylene blue ¹ ABSTRACT The effect of molecular weight on the rate of diffusion was determined using the Agar-water Gel Test. One drop of potassium permanganate (KMNO4)‚ potassium dichromate (K2Cr2O7) and methylene blue were used. Each substance has a respective molecular weight of 158 g/mol‚ 294g/mol and 374 g/mol. The diameters (in millimeter) were measured
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Ultra thin film coatings can be used in a wide range of applications as lubricants‚ anti-stiction layers‚ molecular glues‚ coupling agents or adhesion layers. The mentioned molecular coatings are used to modify material surface properties. The traditional coating deposition methods consist of a set of sequential wet baths. The wet processing method is complex and limits the ability of molecular coating in many MEMS applications. The use of liquid precursors has extremely limited bath life‚ which cause
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Lithium‚Sodium‚Potassium‚Rubidium‚Caesium and Francium are all part of group 1.They are metals that can be easily cut.After being cut‚it is shiny but it quickly tarnishes due to the fact that the metal reacts quickly with oxygen or water.The shiny surfaces of Sodium quickly tarnishes more quickly than Lithium and Potassium more tarnishes more quickly than Lithium.This shows that the reactivity increases as we move down the group. Figure 1 Elements Melting point Boiling point Thermal
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Regular Exercise and Healthy Eating Habits in Losing Weight “Diet is about weight. Exercise is about health” (Dr. Robert Lustig) Long-term results are consistent factor to keeping healthy lifestyle. Dieting in order of losing weight is consistent of healthy eating habits daily. Regular exercise not only helps lose weight. It also prevents individuals from chronic disease. Losing or maintaining weight can be a challenge for many of us. It gets hard to juggle so many things in your life and stay
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diabetes. To achieve these. The following methodology has been adopted. 1) Building the community awareness through various IEC activities‚ development of diabetes education material which is socially relavant & communicating that at individual level through inter personal & group interactions. 2) Approaching the community in general and vulnerable in particular‚ performing the capillary blood gulcose test for established diabetics by the trained person from youth organization in the village
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Similar to potassium‚ sodium is a major mineral‚ however‚ unlike potassium which maintains fluid and electrolyte balance inside the cell‚ sodium is a major part of the body’s fluid and electrolyte balance system because it is the chief ion used to maintain the volume of fluid outside cells. Sodium also helps maintain acid-base balance and is essential to muscle contraction and nerve transmission. The DRI recommended intakes for sodium for adults ages 19 to 50 years old is 1‚500 milligrams per day
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ATP Synthase: The World’s Smallest Motor Adenosine triphosphate (ATP) is a coenzyme produced in cellular mitochondria and is not only integral to cellular metabolism but also to life. The mitochondrial production of ATP‚ which occurs through a complex process called oxidative phosphorylation‚ has been determined to rely heavily on the enzyme ATP synthase. This determination was the result of a complex experiment that attempted to prove not only that ATP synthase was responsible for production
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this manner‚ oil does not mix with water whereby able to induce dirt. 2. Raw materials and soap making Soap making requires two major raw materials: * Fats and oils Fats and oils are esters of fatty acids and glycerol. These are obtained from natural substances which are classified into three: a. Nut oils Cold process soap making is the most suitable for this type of oil which is also characterized by large proportion of fatty acids. Nut oils saponify easily with strong alkali soulution
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Chemical Reactions- Sodium Hydroxide A chemical reaction is a change where two or more substances are changed into a new substance. You can identify a chemical reaction by colour change‚ effervescence (bubbles)‚ when light or heat given off‚ and the change is usually irreversible. There are 6 main types of chemical reactions- combustion (often called burning)‚ synthesis‚ decomposition‚ neutralization‚ single replacement and double replacement. A combustion reaction is a reaction with oxygen‚ and
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NAME:__________________________________ STUDENT#:______________________________ YORK UNIVERSITY FACULTY OF SCIENCE AND ENGINEERING SC/BIOL 3130N (3.0) – MOLECULAR BIOLOGY II MIDTERM I – January 31st‚ 2012‚ VERSION A INSTRUCTIONS: 1) Please sign the sign-in sheet that will be circulated during the exam. 2) Multiple choice – 12 questions‚ one mark each. Choose the best single mostcorrect answer and fill in all answers on the scantron sheet provided. Questions where more than one answer is selected
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