Video of the Free Fall Experiment

Free Fall Experiment

https://www.youtube.com/watch?v=QPlRHGSG8lQ&feature=youtube_gdata

Methyl Acetate

Methyl Acetate ( CH₃COOCH₃)

Structure of Methyl Acetate:
 From the first website.

Some characteristics of Methyl Acetate:

mp : -98 °C

bp : 57-58 °C(lit.)

density : 0.932 g/mL at 25 °C(lit.)

vapor density : 2.55 (vs air)

vapor pressure : 165 mm Hg ( 20 °C)

refractive index : n20/D 1.361(lit.)

FEMA : 2676

Fp : 3.2 °F

storage temp. : Flammables area

Water Solubility : 250 g/L (20 ºC)

Merck : 14,6008

BRN : 1736662

Stability:: Materials: -Computer (Logger Pro) -Two rubber bands -The cylinder -Cables for logger pro -Vaseline -Pressure meassure Results Stable. Extremely flammable - readily forms explosive mixtures with air.  Note low flash point and wide explosion limits.  Incompatible with strong oxidizing agents, strong bases, strong acids, nitrates.  May be moisture sensitive.

0	10,84
1	10,90
2	10,96
3	11,02
4	14,30
5	16,54
6	16,11
7	16,36
8	16,28
9	16,03
10	15,79
11	15,73
12	15,58
13	15,58
14	15,45
15	15,39
16	15,38
17	15,45
18	15,38
19	15,45
20	15,50
21	15,45
22	15,72
23	15,90
24	16,10
25	16,09
26	16,44
27	16,71
28	16,97
29	16,91
30	17,15
31	17,27
32	17,64
33	19,98
34	20,17
35	20,03
36	19,74
37	19,61
38	19,55
39	19,55
40	19,55
41	19,61
42	19,72
43	19,74
44	19,80
45	19,85
46	19,94
47	20,00
48	20,05
49	20,16
50	20,24
51	20,28
52	20,33
53	20,41
54	20,55
55	20,65
56	20,80
57	20,85
58	20,93
59	21,09
60	21,17
61	21,18
98	17,67
99	17,56
100	17,54
101	17,47
102	17,46
103	17,44
104	17,47
105	17,46
106	17,46
107	17,47
108	17,53
109	17,56
110	17,53
111	17,59
112	17,59
113	17,65
114	17,66
115	17,69
116	17,72
117	17,75
118	17,79
119	17,81
120	17,85
121	17,91
122	17,98
123	17,93
124	17,98
125	18,04
126	18,02
127	18,10
128	18,13
129	18,20
130	18,20
131	18,27
132	18,27
133	18,33
134	18,38
135	18,44
136	18,45
137	18,52
138	18,50
139	18,58
140	18,57
141	18,64
142	18,70
143	18,76
144	18,85
145	18,84
146	18,89
147	18,93
148	18,96
149	19,02
150	19,09
151	19,11
152	19,15
153	19,19
154	19,23
155	19,27
156	19,28
157	19,39
158	19,42
159	19,42
160	19,46
161	19,54
162	19,55
163	19,63
210	27,85
211	28,01
212	28,29
213	28,38
214	28,56
215	28,69
216	28,79
217	28,86
218	29,10
219	29,18
220	29,31
221	29,40
222	29,45
223	29,58
224	29,80
225	29,85
226	29,96
227	30,09
228	30,20
229	30,34
230	30,34
231	30,51
232	30,51
233	30,67
234	30,69
235	30,92
236	30,92
237	30,99
238	31,16
239	31,16
240	31,29
241	31,36
242	31,47
243	31,64
244	31,78
245	31,81
246	31,89
247	31,98
248	32,07
249	32,23
250	32,28
251	32,31
252	32,30
253	32,48
254	32,53
255	32,62
256	32,70
257	32,86
258	32,82
259	32,91
260	33,05
261	33,14
262	33,15
263	33,22
264	33,34
265	33,41
266	33,43
267	33,52
268	33,59
269	33,69
270	33,78
299	41,11
300	42,73
301	43,26
302	43,37
303	44,53
304	46,56
305	48,78
306	51,51
307	54,39
308	56,65
309	58,20
310	59,57
311	60,91
312	61,85
313	62,62
314	63,17
315	63,55
316	63,87
317	64,10
318	64,29
319	64,45
320	64,60
321	64,69
322	64,79
323	64,88
324	64,97
325	65,06
326	65,08
327	65,18
328	65,23
329	65,24
330	65,29
331	65,37
332	65,34
333	65,42
334	65,44
335	65,47
336	65,46
337	65,49
338	65,55
339	65,60
340	65,58
341	65,63
342	65,68
343	65,72
344	65,76
345	65,79
346	65,84
347	65,89
348	65,93
349	65,97
350	65,98
351	66,04
352	65,93
353	66,20
354	66,54
355	66,92
356	67,29
357	67,58
358	67,89
359	68,09
360	68,29
361	68,51
474	59,36
475	59,30
476	59,20
477	59,16
478	59,15
479	59,14
480	59,15
481	59,11
482	59,10
483	59,13
484	59,09
485	59,14
486	59,15
487	59,14
488	59,13
489	59,17
490	59,21
491	59,22
492	59,25
493	59,28
494	59,31
495	59,40
496	59,40
497	59,43
498	59,42
499	59,46
500	59,46
501	59,53
502	59,50
503	59,55
504	59,57
505	59,59
506	59,66
507	59,64
508	59,73
509	59,76
510	59,81
511	59,84
512	59,88
513	59,93
514	59,98
515	60,07
516	60,14
517	60,17
518	60,21
519	60,22
520	60,29
521	60,33
522	60,36
523	60,37
524	60,39
525	60,44
526	60,48
527	60,50
528	60,49
529	60,57
530	60,63
531	60,66
532	60,70
533	60,72
534	60,75
535	60,80
536	60,85
537	60,88
538	60,91
539	60,92
540	60,99
541	61,06
542	61,08
543	61,10

Graph:

                         

Photos:

Conclusión:

In the graph we can observe that as time goes on, the pressure increases, however, at some points, it decreases. From 0 to 11 seconds there is an increase of 7 KPa more or less. After 20 seconds (31 aprox.) there is an increase in the pressure of 3 KPa. When we reach the minute, the pressure goes back down 4 KPa. There is a big increase of pressure when we get to 160 seconds. It increases 8 KPa more or less. The pressure remains almost constant (it increases a tiny bit) until we reach 210 seconds. Once we reach 210 seconds there is an increase of pressure of 8 KPa, therefore, there is 28 KPa. As the time goes on, there is a little increase of 1 KPa in 70 seconds. When we reach 270 seconds, there is a massive increase of 34 KPa, which is twice as much pressure as it was before. Until we reach 360 seconds, the pressure remains constant, and there is a little decrease of 6 KPa. The pressure remains constant until the end of the graph

Bibliography:

1) http://en.wikipedia.org/wiki/Methyl_acetate
   Wikipedia. 2014. Methyl acetate. [online] Available at: http://en.wikipedia.org/wiki/Methyl_acetate [Accessed: 24 Jan 2014].

       

Lab Session #3

                                  Measuring the Pressure

Photograph:

                               

Video:

Table:

Pressure	Temperature
105,68	44,1
105,73	44,5
105,83	45,0
105,91	45,3
105,96	45,7
106,06	46,2
106,16	46,6
106,18	47,0
106,27	47,4
106,36	47,7
106,49	48,0
106,58	48,5
106,66	48,8
106,82	49,2
106,92	49,5
107,00	49,9
107,10	50,3
107,20	50,6
107,26	50,9
107,34	51,4
107,44	51,7
107,46	52,0
107,59	52,4
107,68	52,8
107,75	53,2
107,86	53,4
107,97	53,7
108,05	54,1
108,19	54,6
108,26	54,9
108,32	55,3
108,38	55,7
108,46	56,0
108,51	56,3
108,62	56,5
108,74	56,7
108,82	57,2
108,91	57,5
109,03	57,9
109,11	58,0
109,17	58,5
109,21	58,9
109,26	59,5
109,37	59,9
109,48	60,3
109,51	60,5
109,63	60,8
109,66	61,0
109,74	60,8
109,83	61,1
109,95	61,5
109,97	62,1
110,07	62,2
110,14	62,3
110,24	62,6
110,21	62,8
110,21	63,0
110,29	63,0
110,27	63,0
110,24	62,9
110,24	62,8
110,22	62,7
110,21	62,6
110,16	62,6
110,08	62,5
110,07	62,4
110,10	62,3
110,06	62,2
110,08	62,1
110,04	62,0
110,05	61,9
110,08	61,8
110,06	61,7
110,02	61,6
109,98	61,5
109,93	61,4
109,90	61,3
109,90	61,1
109,89	61,0
109,87	60,9
109,80	60,8
109,73	60,7
109,73	60,6
109,74	60,5
109,71	60,4
109,68	60,4
109,66	60,2
109,63	60,1
109,63	59,9
109,66	59,9
109,61	59,8
109,31	59,3
109,28	59,2
109,32	59,1
109,34	59,0
109,40	58,9
109,39	58,5
108,57	54,6
108,01	53,0
107,91	51,1
107,75	50,7
107,91	50,3
108,01	50,5
108,03	50,6
108,01	50,7
108,04	50,7
108,04	50,7
108,01	50,7
107,97	50,6
107,94	50,6
107,94	50,6
107,92	50,5
107,91	50,4
107,91	50,4
107,89	50,3
107,88	50,3
107,89	50,3
107,90	50,2
107,85	50,1
107,85	50,1
107,83	50,0

Graph: