involves a lot of waiting for the gas collection. Make sure you allot yourself the full three hours to perform the experiments. Observations: Use this table to record all your observations for each section of the experiment. Please use complete sentences. Section in procedure|Observations| 1: Hydrogen|Bubbles were present, gas being produced gas appeared to be clear. Did appear ignite.| 2 : Oxygen|Bubbles were present, showing signs that gas is being produced gas is clear. Did appear to ignite
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will continue. For the second article, the rationale for the change present when the Naim Indah Corp Bhd (Nicorp) has entered into an unincorporated joint-venture agreement with Keloil Sdn Bhd for the purpose of carrying out business in the oil and gas industry. Which of the external and internal pressures are referred to? Are there additional pressures not specifically considered in this chapter? The Nokia article is related with external pressure, which is the market decline pressure. The declining
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* aluminum foil, 500g, from room temperature25˚C to the temperature of a hot oven * 250˚C? Given: The specific heat capacity of aluminum is 0.900J/gK. * 5. Calculate the amount of heat released from the combustion of 35.0g of propane gas, * C3H8. Given: The molar heat of combustion for propane is 2220kJ/mol. * 6. Using the amount of heat released from the propane in problem five to warm up 200g of * water, what would be the change in temperature of the water? The specific
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Chemistry Design Lab Rate of evaporation kheshavan Research question How does surface area of ethanol in contact with atmosphere affect the rate of evaporation of fixed volume of ethanol? Variables - Independent variable Surface area of ethanol in contact with atmosphere. I’m going to do this by varying radius of different test tubes, beakers and other materials which is presented in the lab. - Dependent Variable The rate of evaporation. I’m going to measure this by
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(Barium), Si (Silicon), N (Nitrogen), F (Fluorine). * Exercise 132 in Ch. 11 * Aerosol cans carry clear warnings against incineration because of the high pressures that can develop upon heating. Suppose a can contains a residual amount of gas at a pressure of 755 mm Hg and a temperature of 25 °C. What would the pressure be if the can were heated to 1155 °C? * Answer: Residual pressure: 755 mm Hg = 0.993 atm * Final pressure = ? * Start temperature
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Practice 2: ORGANIC COMPOSITIONS OF THE CELL 1.CARBOHYDRATES 1.2.3. Task2-Chemical Detection of Starch Duration (mins) | Color of spot | Explanation | 0 | | _ For amylose (the polysaccharides that is present most in the rice suspension), the core of the helix structure easily accommodate iodine which is in Lugol solution). This complex has the deep blue color._ However, the helix structure (to be more specificly, the glycosidic bonds) is easily wrecked by heat (boiling temperature of water)
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experiment was to determine the percent calcium carbonate in a heterogeneous mixture and to determine the molar volume of carbon dioxide gas at 273 K and 760 torr. This is done by constructing a gas generator to collect the CO2 gas evolved from the reaction. The masses of the sample in the gas generator before and after the reaction are measured. The volume of CO2 gas is also collected and measured. As a result, we found that 25L of CO2 was collected, and after further calculations the molar volume turned
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Key Terms In a lab experiment there has to be a detailed written page. On the written page you should include purpose, hypothesis, materials, procedure, observations, conclusion, application, and finally a diagram. Purpose is used to describe why the experiment has to be done. Hypothesis is used before the experiment has started; it is an educated guess or can be said as a prediction. Materials are one of the 4 most important pieces in a lab. Without the materials you don’t know what tools
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SST | Aquatic environments | Terrestrial environments | Vercosity: A measure of how difficult it is to move through a substance. | Aquatic animals are usually have a streamline shape to assist them with moving more easily through water. | An advantage over aquatic as it is easier for animals to move through air than water. | Buoyancy: A measure of a substances ability to support or hold an object. | Water is more buoyant than air. i.e a cork in air compared to a cork in water.An advantage over
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from lab Purpose: Replace this blue text with the purpose from the lab Procedure: Have you made any changes to the procedure? Please explain. If you made no changes, state so. (1 point) Please Note: This lab involves a lot of waiting for the gas collection. Make sure you allot yourself the full three hours to perform the experiments. Observations: Use this table to record all your observations for each section of the experiment. Please use complete sentences. Section in procedure 1: Hydrogen
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