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chemistry student

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Quark

Quark (2/13)

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  1. 1) The vertex A if a square ABCD is at the point (6, -4 ) . The diagnol BD has equation 2y-x=6, and the vertex B is nearer to the origin than D. a)calculate the coordinates of the centre of the square. b)calculate the coordinates of B and C. 2) Calculate the coordinates of the centre of the circle that pass through (0,2) , (4,8) and the origin O. I attempted 1a and 2 and got random answers... which were not on the answers page. I couldn't do b. pls can someone show me the actual working as i can figure the answer on the answers page anyways i need to know how to work these out - they're hard :/
  2. Ye but what I meant was there's this many x atoms there so same on the other sides. There's this number of y atoms here so let there be y atoms of this on the other side. Then I erase it and start again. And ye I guess it depends on the question. Trial and error is a much quicker method
  3. Can't believe you guys do all of this I just do it by trial and error. What stage of education are you at? I'm doing my A-levels :3 Thanks though! I've found my way of balancing this really hard question using the algebra technique :'D
  4. They're my favourite topics personally. We should have on that, at least psych as its a major part of science tbh.
  5. I'm not sure if I wanna go to uni tbh. Too much work :L
  6. I figured it out so never mind but thanks for your help
  7. No you can't. Many members have messaged me about this... Oh and btwme you need to tell rotten eggs to stop banning members based on their opinions
  8. Yeah, most people who are good at maths are usually good at learning the grammer of new languages so :L
  9. yeah but what's that to do with this? :L 6.02 times 10 to the power of 23..
  10. Right, this isn't exactly homework, but just practice questions;-; say there's a balanced equation given, if given the volume of a certain gas how would you find the volume of another gas? i know the topic is moles but idk where to start ;-;
  11. I couldn't activate this account as I used a hotmail address but that's sorted now since I used a gmail address Just to let you know, since I was confused, I'd created another account (I don't remember the username to be sincere but it's on the same IP so easy to find) so it's just 2 I have right now.. and tbh, I tried to email the staff on this email in the announcements but my hotmail account got temporarily locked cos there was apparently suspicious activity which I don't understand, so it would be easier to create another account to PM the admin which I did but that account turned out to be a mess so I decided to try to change my email.. it seems that hotmail addresses are being rejected for some reason? so you might want to check that out? Pffttt, sorry for the longish story, but I don't have any good reason to keep my other account anymore so feel free to delete it since it's against the rules anyway. Sorry for the bother.
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