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| Thread ID: 104991 | 2009-11-15 08:41:00 | pcuserwinvista | xyz823 (13649) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 830421 | 2009-11-23 02:19:00 | Lucky guys, I've got Geography on Friday and then Science next Wednesday (thats right, the very last day of exams :crying). I've got Science on the last day as well, but that's only one paper. |
pcuser42 (130) | ||
| 830422 | 2009-11-23 04:21:00 | I didn't even attempt chemistry. Only did Physics and Astronomy, as soon as the 45 mins was up, i was out of there! And that's my exams done for the year :) I did Chem, Bio and Physics. I wasn't enrolled in Astronomy or Geology lol. (I asked my school and they never got round to it) :crying What did you get for Q1 A and Q1 B in the Physics paper? I got something like 1596 N and 0 N. |
xyz823 (13649) | ||
| 830423 | 2009-11-23 04:23:00 | Uhm, equal number of electrons and protrons? And a difference of the number of neutrons has no bearing on the charge? I think I ended up writing some crap about how they both had electron configs of 2,4 so that they don't lose or gain electrons making them neutral. (God knows if thats right because I had NO idea at all lol) |
xyz823 (13649) | ||
| 830424 | 2009-11-23 05:00:00 | I did Chem, Bio and Physics. I wasn't enrolled in Astronomy or Geology lol. (I asked my school and they never got round to it) :crying What did you get for Q1 A and Q1 B in the Physics paper? I got something like 1596 N and 0 N. Yeeah, That's what i got, Talking to some people after, Q1 B had many of them stumped as they didn't think it could be 0. |
josh2200 (6681) | ||
| 830425 | 2009-11-23 06:41:00 | Yeeah, That's what i got, Talking to some people after, Q1 B had many of them stumped as they didn't think it could be 0. LOL the car or whatever was moving at a constant speed meaning that the net force was 0 and the car is neither accelerating or decelerating. |
xyz823 (13649) | ||
| 830426 | 2009-11-23 06:51:00 | LOL the car or whatever was moving at a constant speed meaning that the net force was 0 and the car is neither accelerating or decelerating. Exactly. But, we are made to take science for year 11, even if we have absolutely no interest in it. So, that means the people who don't want to be doing it pay absolutely no attention in class and then wonder why the fail the exams. |
josh2200 (6681) | ||
| 830427 | 2009-11-23 06:54:00 | Exactly. But, we are made to take science for year 11, even if we have absolutely no interest in it. So, that means the people who don't want to be doing it pay absolutely no attention in class and then wonder why the fail the exams. Its optional here but most people take it anyway. |
xyz823 (13649) | ||
| 830428 | 2009-11-23 07:03:00 | I think I ended up writing some crap about how they both had electron configs of 2,4 so that they don't lose or gain electrons making them neutral. (God knows if thats right because I had NO idea at all lol) Explain why the two isotopes Carbon 12 and Carbon 13 are neutral. Include the atomic structure and electron configuration in your answer. The answer (just because I'm love chemistry) Carbon-12 and Carbon-13 are isotopes. Although Carbon-13 has an extra neutron compared to Carbon-12, the fact remains that both of them have six protons and six electrons each. Consequently, the charge remains neutral for both isotopes despite the discrepancy in the number of neutrons. The electrons are placed in the orbital according to the configuration of 2,4, as illustrated below: (illustration) Did you guys learn about Pauli's Exclusion Principle, by any chance? Cheers :) |
Renmoo (66) | ||
| 830429 | 2009-11-23 07:14:00 | I had my exam Friday for L6 advanced info systems, with open poly had a room all to myself with just a moderator and used just about all of my 3 hours. Just wish I didn't have to wait so long to get the result. I only need to get 40% to pass as got good grades in the assignments | gary67 (56) | ||
| 830430 | 2009-11-23 07:15:00 | Explain why the two isotopes Carbon 12 and Carbon 13 are neutral. Include the atomic structure and electron configuration in your answer. The answer (just because I'm love chemistry) Carbon-12 and Carbon-13 are isotopes. Although Carbon-13 has an extra neutron compared to Carbon-12, the fact remains that both of them have six protons and six electrons each. Consequently, the charge remains neutral for both isotopes despite the discrepancy in the number of neutrons. The electrons are placed in the orbital according to the configuration of 2,4, as illustrated below: (illustration) Did you guys learn about Pauli's Exclusion Principle, by any chance? Cheers :) Nope we did nothing on this sort of stuff (well that I remember anyway) |
xyz823 (13649) | ||
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