Cucl2 Research Paper

All standardizations are performed in triplicate. Weigh out .1000-.1200 gram KIO3. Add 70-80 mL of deionized water. Swirl and dissolve. Add 3 mL of 6M HCl. Swirl and mix. Quickly titrated the brow-red solution with 0.1M Na2S2O3 until it is light yellow. Then add 3.5 mL of starch indicator. Titrate again until the dark color first disappears.

A new compound CU466 is a potential potent inhibitor of Dihydrofolate Reductase to treat methotrexate-resistant breast cancer

In this experiment, the experimenter will determine the chemical formula for the copper chloride hydrates using the law of definite proportions. The hydrated compound has a general formula of CuxCly•zH2O, with the variables x, y, and z. The variables represent the whole number ratio of moles that will be the “true” chemical formula of the hydrate. The chemical formula shows the number of atoms of each element in a compound.

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Purpose Statement: In this experiment, we will determine the chemical formula of an unknown hydrated copper chloride compound which is composed of copper and chlorine. We will use stoichiometry, which is the relationship between quantities of materials in a chemical reaction, to determine the chemical formula for a compound. We will use the mole to mole conversion to find the formula of a hydrated compound with the general formula CuxCly.zH2O. We will convert the masses of water, copper, and chlorine to moles of water, copper, chlorine and determine the whole number ratio of these components in the empirical formulas so we can find the empirical formula of the dehydrated compound, CuxCly and the empirical for the hydrated compound CuxCly.zH2O. Results:

The reaction between Copper (II) Chloride and aluminum has a formula that follows this basic single replacement formula. Aluminum was able to replace copper during the reaction because it is higher on the activity series. If aluminum

I started with elemental copper metal and then reactions occur step by step as follows:

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In this experiment an elemental copper was cycled a series of five reactions where it ended with pure elemental copper as well, but at different stages of the cycle the copper was in different forms. In the first reaction, elemental copper was reacted with concentrated nitric acid where copper changed the form from solid to aqueous. Second reaction then converted the aqueous Cu2+ into the solid copper II hydroxide (Cu(OH)2) through reaction with sodium hydroxide. The third reaction takes advantage of the fact that Cu(OH)2 is thermally unstable. When heated, Cu(OH)2 decomposes (breaks down into smaller substances) into copper II oxide and water. When the solid CuO is reacted with sulfuric acid, the copper is returned to solution as an ion (Cu2+). The cycle of reactions is completed with the

Responses and Answers Review Questions 1. Why is chemistry often called the central science? -Because it touches all other sciences. 2.

The reaction characteristics of basic copper carbonate 〖mCuCO〗_3⋅n〖Cu(OH)〗_2 were observed by changing the reaction mole ratio. The reaction mole ratio of sodium carbonate to copper chloride (II) was controlled from 1.08 to 1.68. Fig. 1 shows the XRD patterns of copper carbonate powder. At a reaction ratio of 1.08, paratacamite (Cu_2 Cl(OH)_3 ), beside alkali copper carbonate, was formed because of incomplete reaction at a copper content of 53.9 wt%. Lack of sodium carbonate may cause incomplete reaction with copper chloride (II) because of low pH (6.0) of the solution [12]. The copper content according to the reaction mole ratio were 57.7, 50.5, 58.8, 59.3, and 59.8 wt% at the reaction mole ratios of 1.20, 1.32, 1.44, 1.56, and 1.68, respectively.

In the fourth reaction, 15 mL of 6.0 M sulfuric acid was added to the copper (II) oxide while stirring. The balanced equation for this reaction is as follows:

Depression can be defined as part of a psychological state of mind that a person might encounter. Most famously recognized psychiatrist Sigmund Freud is known for his Psychodynamic theory. His psychoanalysis theory is known to be successful for treating patients with mental illness. Sylvia Plath, the author of the Bell Jar, makes the main character Esther go through a psychological transformation. Esther’s transformation can be realized through Freud’s psychoanalysis theory as the story unfolds from the beginning to end. The influences of people and events around Esther have affected her transformation.

In the nucleus of an atom there are protons and neutrons the number of protons and neutrons depends on the element and ,if it is an isotope of that element. E.g. carbon 12, carbon 12 has six neutrons six protons and 6 electrons . Electrons are located around the nucleus of the atom. Electrons are in shells, the shell closest to the nucleus is 1 , the one after 2 and so on. Each shell can only hold up to a certain number of electrons . the first can hold up to 2 , the second 8 (2+6) the third up to 18 (2+6+10). The general formula for finding out how many electrons a shell can hold is 2n^2. Electrons have a negative charge , while protons have a positive and neutrons have no charge. A atom has the same number of protons and electrons. An ion is formed when an atom loses or gains a electrons .

Cars flying across the earth’s sky and energy that powers our technology drawn from the sun; this is a futuristic utopia solely depicted in movies in our modern society. Just two years ago the film “Back To The Future,” predicted that we would live in a society like this, yet we have not come even close to what we were shown in the theaters. Why is that? Well, popularity, and innovation are directly proportional to each other. We tend to improve on things that we use in our everyday lives; coming out with better phones, faster cars, and more advance military weapons. Going green and helping the environment seems to be overshadowed in terms of importance due to the lack of potential profits outweighing that of the former.