Physics
Physics, 03.08.2019 02:30, mandilynn22

What's the melting point of aluminum

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Physics, 25.06.2019 01:30, aleilyg2005
The latent heat of fusion of aluminum is 93 kcal / kg at 660 degrees celsius determine the amount of energy needed to melt 100 kg of aluminum at the melting point
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Chemistry, 01.10.2019 03:00, bunbun2913
An udentified substance, y, was thought to be one of the following three compounds. compound: a melting point: 132 °c compound: b melting point: 133 °c compound: c melting point: 134 °c y was mixed with each of the above compounds and the melting point of each mixture was determined. the following results were obtained. mixture: y + a melting point: 114 – 129 °c mixture: y + b melting point: 132 – 133 °c mixture: y + c melting point: 86 – 99 °c deduce the identity of y. briefly explain your answer.
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Physics, 05.10.2019 06:00, cruzsuarezjanca
100 g of molten aluminum at 932 k is dropped into 1.00 liter (1000 g) of water at 295 k . calculate a) how much water will boil away, b) how much aluminum will solidify, and c) what is the final temperature of the final combined system? given: melting point of aluminum 932k, latent heat of fusion of aluminum: 396 j/g, boiling point of water 373 k; latent heat of vaporization: 2260 j/g; the specific heat of water is 4.190 j/(gk), specific heat of aluminum is 0.900 j/(g k)
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Chemistry, 25.10.2019 18:43, kingofthesea88
In the recrystallization/melting point lab, and in the use of a digimelt melting point apparatus, there are a number of details which should be followed in order to obtain good results. some of these are listed below. select whether each statement below is true or false ? (i)-a slow heating rate near the expected melting point gives the best result. (ii)-a too fast heating rate is likely too result in an observed melting point that is too high. (iii)-the temperature sensor is placed near the bottom of an aluminum heating block, closer to the heater than the sample, and is likely to read lower than the actual melting point of the sample. (iv)-too much sample in the capillary will cause an artificially long melting point range. (v)-you should record the temperature at which the sample first softens, then the temperature at which it completely melts, and report the melting point as the average of these two temperatures
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