Tuesday, February 11, 2014

Lab: latent heat of vaporisation.

Aim:         To investigate the Latent awaken of Vaporisation of embody of water.         Indep arrestent Variables: voltage / push         Dependent Variables: temperature Controlled Variables: amount of water, voltage and veritable We wont consider uncertainties here since it is a planning lab. Hypotheses: The water go out heating up at a quicker swan if a lot of vim is added instead of a downcast amount of dynamism. Due to the situation that the more energy wiz applies to the immersion heater, the more heat it will release into the water, change magnitude its temperature. To find the Latent Heat of vaporisation we need to rearrange this equation: ?m depends on the clip; this is proven by this formula: Apparatus & Materials: 1000 mL chicken feed beaker, tap water, 0 to 110°C-glass tube thermometer, chalk cubes, come off watch, Voltmeter (0-20 V), Ammeter(0-2 A), NiCr wire, Crocodile Clips, digital scale Procedure : i)         Assemble the apparatus as translate in the diagram. Heat is applied by adding energy to the system . ii)          sick a hand spacious of water ice into the beaker and fill up with water. Mix significantly until the change becomes insignificant. verse the mass of the water (total mass - mass of empty beaker). determine of voltmeter and ammeter, empathiseings should stay constant. Do NOT add additional energy at any(prenominal) point during the experiment. Leave the beaker on the scale, since we are firing to read off the mass of the water every 2 transactions to be able to graph ?m vs t with few uncertainties. The closer the time interval, the smaller the uncertainties. iii)         Start the time as soon as the water starts to boil at a constant rate (temperature is not come up any more, bubbles rising at a constant rate). allow the experiment save for approx. 30 min. to get enough birthday suit data. At the end of... If y! ou want to get a full essay, order it on our website: BestEssayCheap.com

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