EXPERIMENT 7: PERCENTAGE OF OXYGEN IN KClO3 Introduction: In this experiment you will determine the percentage of oxygen in potassium chlorate. You will calculate the theoretical value from the chemical formula and compare your experimental value to the theoretical value. Background: When potassium chlorate (KClO3) is heated‚ it undergoes chemical decomposition. Oxygen gas (O2) is given off and potassium chloride (KCl) remains as the residue. The equation for the decomposition of potassium
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electronegativities of the carbon and oxygen atoms that are bonded in acetic anhydride. This difference in electronegativities causes one of the carbonyl groups in acetic anhydride to break its carbon-oxygen double bond with the oxygen atom taking the pair of electrons from the pi bond and results in a negative charge on oxygen and a positive charge on carbon. The positive charge on carbon is then stabilized by the donation of a lone pair of electrons from oxygen‚ which is attached to both of the carbonyl
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moles of Iron were used 2. According to the law of conservation of mass‚ what is the mass of oxygen that reacts with the iron? 118.37g – 85.65g = 32.72 grams of Oxygen reacted with Iron 3. Calculate the number of moles of oxygen in the product. 32.72g/15.99g = 2.045 moles is the amount of moles of Oxygen produced 4. Use the ratio between the number of moles of iron and the number of moles of oxygen to calculate the empirical formula of iron oxide. Fe3O2 Procedure: Set up a Bunsen burner
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chemical substance appears. In this experiment we will be measuring the rate of decomposition of hydrogen dioxide with the following reaction: 2 H202 (aq) 4 2 H20 (l) + 02 (g) We can trap the oxygen gas created into a container thus showing the extent of the reaction and this will show the rate in which oxygen is created and how the rate will change when we use different initial concentrations. We do use a catalyst in this reaction to speed up the process and lower the activation energy needed to run
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------------------------------------------------- ------------------------------------------------- ------------------------------------------------- PHYSICAL STUDY NO.2 ------------------------------------------------- ------------------------------------------------- OXYGEN BOMB CALORIMETER & ORSAT APPARATUS ------------------------------------------------- ------------------------------------------------- ------------------------------------------------- -------------------------------------------------
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Marcelo Duka G-7L BIO 2 RESPIRATORY SYSTEM The Respiratory system consists of organs and tissues that aid the oxygen to travel in the body and emits the waste gases out of the body. It is also called as the oxygen delivery system for it is the system responsible in delivering the oxygen to all parts of the body. The process of breathing‚ the inhalation of oxygen and exhalation of carbon dioxide‚ is called respiration. Respiration can be described into two processes: internal or cellular
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THE 4 QUALITIES OF GOOD WATER by Dr. Robert O. Young There are many measurements of water‚ but the most important for determining the best water to drink are‚ the pH‚ oxidative reduction potential—or energy potential/activity—molecular structure‚ and purity. Science has helped us to determine that the best measurements for our drinking water are the pH and purity‚ but little understood is the importance of the molecular structure of water. Assuming that most waters that humans are drinking
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of pure and excess nitric acid‚ it can decompose to nitrogen dioxide and chlorine: elevated temperature 658 NITROSYL CHLORIDE 2ClNO + HNO3 → 6NO2 + Cl2 +2H2O Also‚ nitrosyl chloride can be synthesized from its elements by heating nitrogen‚ oxygen and chlorine gas at 400°C: N2 + O2 + Cl2 → 2ClNO Faraday obtained nitrosyl chloride by dissolving palladium in a mixture of hydrochloric and nitric acids (Faraday‚ M. Trans. Roy. Soc. (London)‚ Vol. 136‚ pp. 48‚ 1846): Pd + HNO3 + 3HCl → PdCl2 + ClNO
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is important for life because the fresh air from the chlorophyll is doing photosynthesis. Plants also make food and oxygen. Then plants is doing photosynthesis‚ it must have sunlight to make their own food and oxygen. The equation about photosynthesis basically is CO2 + H2O C6H12O6 + O2 ( means need the chlorophyll and sunlight). Photosynthesis can make their own food and also oxygen for Earth as well‚ so photosynthesis is absolutely important for life. Inside the plant‚ it has a power house called
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waves crash about‚ air is mixed with the water‚ thus increasing oxygen content. This is due to the fact that when waves crash about‚ the water will be more exposed to the air and cause an increase in the amount of oxygen present in the water. When the tide is low and periwinkles are exposed‚ there is no shortage of oxygen for the periwinkle snails either because the surrounding air is composed of around 21% oxygen‚ which is enough oxygen for a periwinkle snail. To survive in conditions that change
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