considered very toxic. Large quantities of curium are now easily made in nuclear reactors. A nuclear reactor is a device in which neutrons split atoms to release energy for electricity production. 1.Curium is highly radioactive and it glows red in the dark 2.Curium is mainly used for scientific research purposes 3. Curium-244 was used in the Alpha Proton X-ray Spectrometer (APXS) which measured the abundance of chemical elements in rocks and soils on Mars. 4. it has a melting point of 1340°C Curium was
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Arturo Contreras T. Conner-Moore Chemistry I Honors 22 August‚ 2016 Why is a Soccer ball consider Chemistry? What is chemistry? The word “chemistry” dates back to 1590-1600‚ but it is debatable that either the Egyptians or Greeks were the first to introduce chemistry to the world. What society does know‚ it is that Antoine Lavoisier is known as the “Father of Chemistry.” Lavoisier was the first to document how he compiled and completed the first list of elements. He discovered and named the elements:
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soluble because Ethanol has a hydrogen bond (OH) which attracts to water (H₂O). Ethanthiol has London-dispersion forces which does not attract to water because there is no Oxygen to bond to water. 6.) a.) i.) ii.) b.) In Box X‚ Compound 2 is represented because of the stronger intermolecular forces present (Hydrogen-bonding intermolecular forces)‚ therefore creating a higher boiling point (78ᵒ). c.) Dichloromethane has greater solubility in water than Carbon tetrachloride because Dichloromethane
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Uniforms‚ Traveling etc. are NOT YOUR PROBLEMS. He will work for you in accordance with your instructions‚ but will be administratively controlled by us. WE SHALL BE RESPONSIBLE FOR THE FOLLOWING: 1. All traffic control and parking arrangement. 2. Regulating entry of all Hawkers and Vendors. 3. Ensuring that no unauthorized person enters the premises and creates disturbance and nuisance. 4. we can handle any of your labour problems escorting of company official or any other such situation from
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Chapter 12 section 1 review 1) what characteristics of gases makes them different from liquids or solids? Gases have particles that are have a greater distance apart from each other than the particles between a solids and a liquid 2) why are gasses considered fluids? Gasses are fluids because they are able to flow 3) what’s happens to gas particles when a gas is compressed? When a gas is compressed it will move gas particles closer and make the volume smaller. 4) what is the
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dependent on this substance and i use it in my ordinary life through coffee and other such foods. Caffeine (C8H10N4O2) is the regular name for trimethylxanthine (precise name is 1‚ 3‚ 7-trimethylxanthine or 3‚ 7-dihydro-1‚ 3‚ 7-trimethyl-1H-purine-2‚ 6-Dione). It has a molar mass of 194.19 grams. Caffeine fits in with the heterocyclic compound otherwise called purines‚ caffeine can likewise be delegated an alkaloid. The concoction is otherwise called caffeine‚ thane‚ matinée‚ guanine‚ or methyl
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Article Excerpt Access to the world’s oil supplies is a principal factor behind US government policy‚ as the events of the past two years have unmistakably shown. And no wonder: possessing only 2% of the world’s reserves of oil‚ the US consumes 25% of global oil production at a cost of $150bn per year. Of this‚ 70% is in the form of gasoline (petroleum) or diesel fuel for transport use. Given the finite supply of oil‚ this cannot go on. Certainly‚ by 2050‚ competition for oil supplies will be
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ΔT1 = Kfm where Kf is a constant that depends on the specific solvent and m is the molality of the molecules or ions solute. Table 1 gives data for several common solvents. Table 1. Molal Freezing Point and Boiling Point Constants | Solvent | Formula | Freezing Point (°C) | Kf(°C/molal) | Boiling Point (°C) | Kb(°C/molal) | Water | H2O | 0.0 | 1.86 | 100.0 | 0.51 | Acetic acid | CH3COOH | 17.0 | 3.90 | 118.1 | 3.07 | Benzene | C6H6 | 5.5 | 4.90 | 80.2 | 2.53 | Chloroform | CHCl3 | –63
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title: PHYSICAL CHEMISTRY Course of study: Foundation in Science Contact Hours: 2 lecture contact hours per week for the duration of 14 weeks. 1 tutorial contact hour per week for the duration of 12 weeks. 2 practical contact hours per week for the duration of 10 weeks. Mode of delivery: Lecture‚ tutorial & experiment Attendance for lectures‚ tutorials and experiments are compulsory for every student. Main Text: Kotz‚ J. C.‚ Treichel‚ P. M.‚ & Townsend‚ J. R. (2012). Chemistry & chemical reactivity
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Photosynthesis Green plants absorb light energy using chlorophyll in their leaves. They use it to react carbon dioxide with water to make a sugar called glucose. The glucose is used in respiration‚ or converted into starch and stored. Oxygen is produced as a by-product. The equation for photosynthesis: Carbon Dioxide + Water (+ Light Energy) → Glucose + Oxygen Symbol equation: 6CO2 + 6H2O ------> C6H12O6 + 6O2 (http://www.bbc.co.uk/schools/gcsebitesize/science/add_aqa_pre_2011/plants/plants1
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