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Sunday, December 8, 2013

Specific Heat lab

Question: Find a method to find the specific waken capacity of an foreign object. Hypothesis: Using the correspond q=mc∆T, the heat capacity of the un be intimaten object open fire be go downd. Assuming heat pass by piddle = heat gained by the object, we can intake two concurrent equations to solve for the c value of the object. Variables: Controlled duration for irrigate to cool, nap of metal, volume of water Dependent change in temperature Materials: Hot plate The unbeknownst(predicate) object Thermometer surge balance Calorimeter Water Beaker Procedure: 1.Carefully measure 200 mL of water for the beaker and the calorimeter. 2.Note down the water in twain containers 3.weigh the unmapped object using the mass balance 4. bottom the unknown object in the beaker with the water. 5.Heat the water in the beaker until it boils. 6.Remove the object from the beaker and rove it into the calorimeter filled with water. 7.Cov er the eyelid and place the thermometer inside to measure the temperature change. entropy Collection: trial #1: Mass of the unknown objectInitial temperature T1 (◦C) ± 0.5 give the axe temperature T2 (◦C) ± 0.5 Calorimeter 200mL of water2032 Beaker 200mL of H2O2086 Trial #2: Mass of the unknown objectInitial temperature T1 (◦C) ± 0.
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5Final temperature T2 (◦C) ± 0.5 Calorimeter 200mL of H2O2029 Beaker 200mL of H2O2087 Data affect: We know that the heat lost by the water is bear upon to the heat gained by the unknown object. Therefore mwcw∆Tw = mobjectcobject∆Tobject is true. Trial #1: mw = 200g cw = 4.18 kJ/kgK, ∆Tw = 97 20 = 77◦C ! mobject = 21.7g cobject = ? ∆Tobject = 32 20 = 12◦C Therefore, (200)(4.18)(77) = (21.7)( cobject )(12) cobject = t1 = water t2 = water + metal cobblers last In this experiment, the change in the temperature of water was used to intend the specific heat capacity of an unknown...If you want to get a full essay, order it on our website: OrderEssay.net

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