Chemistry And a Lab Expriment

Laboratory Experiment 2 B: estrus and locomotive engine cooling system Curves for a Pure Substance Observations and information: | Cooling Process| Heating Process| Time (min)| Temperature (C°)| Observations| Temperature (C°)| Observations| 0| 59| Liquid Paradichlorobenzene was vaporous| 20| Whitish real(a)| 0.5| 55| | 28| | 1| 52| | 29| | 1.5| 51| The outside of the politic began to solidify| 46| | 2| 51| | 49| | 2.5| 51| | 50| | 3| 51| | 51| Small core of liquid make| 3.5| 51| | 51| | 4| 51| | 51| | 4.5| 51| | 51| | 5| 51| | 51| | 5.5| 51| | 51| | 6| 51| | 51| | 6.5| 51| | 51| | 7| 51| | 51| | 7.5| 51| | 51| | 8| 51| | 51| | 8.5| 51| The outside of the liquid was solid; only a atomic portion inside remained liquid.| 51| More liquid formed; only small amount of solid left in the center of the test furnish| 9| 51| | 51| | 9.5| 51| | 51| | 10| 51| | 51| | 10.5| 51| | 51| | 11| 51| | 52| Solid solely melted and turne d into downright liquid| 11.5| 51| | 54| | 12| 51| | 55| | 12.5| 50| The liquid only solidified and turned into a whitish solid.

| 56| | 13| 48| | 57| | Questions: 2. The freezing commove of paradichlorobenzine is approximately 53.2 °C only my graph illustrates it as 51°C. (Note this is due to the variant atmospherical pressures and concentration of paradichlorobenzine which causes many diminished variation.) 3. The melting point of paradichlorobenzine is approximately 53.5 °C but my graph illustrates it at 51°C.( (Note this is due to the different atmospheric pressures and concentratio n of paradichlorobenzine which causes some m! inor variation.) 5. I can conclude that both the melting and change state points of a pure warmheartedness are the (almost) the same. This is due to the position that pure substances (unlike mixtures) have certain(prenominal) composition. And their components are...If you want to get a broad(a) essay, order it on our website: BestEssayCheap.com

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