72g 0.72g of Na-2CO3 to fully react with 1g of CaCl2-.2H2O Step 4: Mass of weighing dish _0.5_g Mass of weighing dish and Na2CO3 _1.2_g Net mass of the Na2CO3 _0.7__g Step 6: Mass of filter paper _1.0_g Step 10: Mass of filter paper and dry calcium carbonate __1.5_g Net mass of the dry calcium carbonate __0.5__g (This is the actual yield) Step 11: Show the calculation of the theoretical yield of calcium carbonate. 0.00680 moles CaCO3 x 100
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This assignment called for me to pick three out of four sensory experiments to conduct and then record my reaction to each experiment. The three experiments I chose to conduct are number one- the sandpaper experiment‚ number three- the index cards and flashlight experiment and number four- the water in bowls experiment. While conducting each of these three experiments I was surprised by the results of each of them. Experiment Number One: I rubbed my finger on the piece of coarse sandpaper and
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Kevin Browning Hired Guns What are the limits of the government‚ which the majority cannot override? Does the government have the right to conscript its citizens and send them off to war? This raises the question of consent. Do we own ourselves? Does conscription violate the right of self possession? Mr. Sandel goes into great detail about Locks Government by Consent. The question of conscription or a draft by the military‚ is this action morally or ethically correct? It is discussed
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OBJECTIVES To demonstrate the effects that a bypass capacitor has on amplifier voltage gain (Av). To demonstrate the ac operation of the common-emitter (CE) amplifier. INTRODUCTION A common emitter amplifier is one of three basic single-stage bipolar-junction-transistor (BJT) amplifier topologies‚ typically used as a voltage amplifier. In this circuit the base terminal of the transistor serves as the input‚ the collector is the output‚ and the emitter is common to both. The input signal to a
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xa.yimg.com/kq/groups/9534928/992196434/name/1.pdf by WE GORDON - Cited by 8 - Related articles reaction of sulfamic acid with nitrites is practically instan- taneous‚ and only ... differences between the sulfamate ion and the sulfate or chloride ions (12). T. [PDF] Method 9010C - US Environmental Protection Agency www.epa.gov/osw/hazard/testmethods/sw846/pdfs/9010c.pdf the distillation‚ nitrate and nitrite will form nitrous acid‚ which will react with some organic
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Hideout In Geylang Ah Ngow : I’m sorry Lou Foo. I should not have killed you. Chin: Can I be released now? I know that you are a good guy. Ah Ngow: Alright‚ but you better don’t report this to the police. ( unties the rope on Chin) Chin : I wont. Policewoman : Stop right there! Ah Ngow and Chin: Frozed Ah Ngow : Quickly grabs Chin and place a knife at his neck. Chin : What are you doing? ( surprised) An Ngow : Don’t worry. I wont kill you. It’s a trap for the police.( whispering in his
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result with the theoretical value given by F = m(2r . Apparatus 12 slotted weights with hanger (0.02kg each) 1 rubber bung with nylon string about 1.5m 1 glass tube about 20cm long 1 triple beam balance 1 meter rule 1 stop watch Several small paper markers Theory When a mass m attached to a string is whirled round a horizontal circle of radius r‚ the centripetal force for maintaining the circular motion is given by F = m(2r ‚ where ω is the angular velocity of the circular motion. The centripetal
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100= 8.3% 10cm Paper 0.6 .6/6 * 100= 10% Iron 1.9 1.9/6 * 100= 31.7% Sand 1.1 1.1/6 * 100= 18.3% Benzoic Acid 0.5 .5/6 * 100= 8.3% Salt 1.4 1.4/6 * 100= 23.4% Total 6.0 100% Questions: 1. How did your proposed procedures or flow charts at the beginning of this experiment compare to the actual procedures of this lab exercise? I had to change the process I did things a little to allow adequate time for the sand and the benzoic acid crystals to dry on the paper towels‚ and for
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Daphnia Experiment Report 1. Introduction Caffeine is found in many plant species‚ where it acts as a natural pesticide. It is found most commonly in cocoa‚ tea and coffee‚ but is also artificially added to some soft drinks such as cola to act as a flavour enhancer. When consumed by humans‚ caffeine works as a stimulant causing amounts of released neurotransmitters to be increased. High use of caffeine has been related with raised blood pressure‚ restlessness‚ insomnia and anxiety which‚ in
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Experiment #10 & #11 The Synthesis of Cobalt Oxalate Hydrate The Synthesis of a Nitrite Complex February 5‚ 2012 Chemistry 1211L - 146 - Spring 2012 Procedure The Synthesis of Cobalt Oxalate Hydrate Place 100 ml of distilled water in a 250-ml (or 400-ml) beaker. Add 1.26g of oxalic acid dihydrate (H2C2O4.2H2O) and 1 ml of concentrated ammonia. Stir the mixture until the solid has dissolved completely. Dissolve 2.34 g of cobalt chloride hexahydrate (CoCl2.6H2O) in 100 ml of water
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