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yzq
28 November 2007 @ 10:00 pm
Heard from a classmate (Sylvia) that a baby suffering from leukemia needs blood from B- or O donors urgently. Anyone feeling charitable? :) Just went myself yesterday (I'm A+) and it hurt less than expected. I looked away and the friendly nurse was there to distract from the needle-poking by talking about her kids and niece in HC and blah blah blah. Surprised to learn that only ~3% of the eligible population donates - how do the hospitals ever get by? Although it wasn't very crowded so I couldn't get a representative estimate of the donors, it seemed that most of them were the heartlander-auntie/uncle type. Working professionals probably go during the weekends I guess.
Anyway less crap: the blood bank's located next to SGH, opposite Outram Park MRT. Walking towards SGH from the MRT, the big "BloodBack@HSA" sign is unmissable.

And why the heck does Windows Aero have higher graphics requirements than games like GTA:SA, WC3 or HL2? PS 2.0 and 128 MB of video RAM just for the sake of a few translucency effects?
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Current Music: Gin Blossoms - Till I Hear It From You
 
 
yzq
19 September 2007 @ 02:20 am
Yesterday,
All my troubles seemed so far away,
Now it looks as though they're here to stay,
Oh, I believe in yesterday.

Suddenly,
I'm not half the man I used to be,
There's a shadow hanging over me,
Oh, yesterday came suddenly.

Why she
Had to go I don't know, she wouldn't say.
I said,
Something wrong, now I long for yesterday.

Yesterday,
Love was such an easy game to play,
Now I need a place to hide away,
Oh, I believe in yesterday.

Why she
Had to go I don't know, she wouldn't say.
I said,
Something wrong, now I long for yesterday.

Yesterday,
Love was such an easy game to play,
Now I need a place to hide away,
Oh, I believe in yesterday.

Mm-mm-mm-mm-mm-mm-mm.



Shitty because of being reminded of screwing up and feeling totally malu. The rest of the emo mood disappeared upon finding out that I got the correct answer for chem (below).



Omg I just realised I found the correct formula for hydromagnesite (Mg5(CO3)4(OH)2) in chem paper 2! I used a cheapo method to do that question; I thought sure-wrong one la. Wondering if anyone used a more orthodox method. Here's mine:

Basically I used the mass of CO2 gas to calculate the no. of moles of carbonate in the 1g sample.
Then since 1 carbonate anions decomposes to give 1 O2- anion, and 2 hydroxide anions decompose to give 1 O2- anion, Mgx(CO3)y(OH)z.nH2O decomposes to MgxOy+(z/2). The back-titration with NaOH allows you to find out how much excess HCl was added, and therefore how many moles of O2- was in MgxOy+(z/2). From this, you can find the no. of moles of OH- in hydromagnesite because you can subtract the O2- contributed by carbonate.
Then kena stuck.
But then since the molar ratio of carbonate:hydroxide was 2:1
y=2z

The cheapo part was to calculate z by balancing the ionic charges on Mgx(CO3)2(OH)z<. Mg has 2+ charge, carbonate has 2-, hydroxide has 1-. Since the overall charge must be 0,
2x=2y+z
2x=5z
x=(5/2)z

Then since ionic salts typically have integer values for the number of each ion in the formula, to make x an integer,
z = 2

So
x = 5
y = 4

Then to find n is trivial cos you have x, y and z already and you know the Mr of hydromagnesite.

But then this method finds z before finding x and y, whereas the question asks you to find x and y first in part (a), before deducing z and n in part (b). So what's the proper method?

(Saw this method of balancing charges in some textbook during chem o.)


Edit: I'm obviously damn dumb =p Realised that no. of moles of Mg2+ = no. of moles of O2-. Ooops. Strike above. Ty to jez/lowjh/myf heh
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yzq
28 August 2007 @ 01:55 am
Misc  
I would have sworn that I saw it in your eyes. Perhaps I was wrong. And the rest is a rock and roll cliché, so I'll skip that.




It's hard to be despondent after good food, so I suppose that's the reason for the absence of emo-ness now. Despite being described as a "culinary wilderness", Biopolis actually has a few restaurants serving good food. The plus point about the whole wilderness thing is that the places there are so deserted that one can actually have a quiet dinner in peace without screaming kids, loud family gatherings, or noisy traffic outside. But they're strictly drag-your-parents-there-to-pay-the-bill sort of outlets, unless you go to the food court, that is -.-

Tried this Indian vegetarian restaurant called Raj today. Surprisingly, even with a complete lack of meat, the food was rather tasty and filling. The spices used in Indian cooking brought lots of flavour to the food and kept it tasting like authentic Indian food, I think. (It serves both North and South Indian food.) I can't remember the names of the dishes, so I'll try my best. Started with some fried flour with vegetable starter. I think it's most similar to Ngoh Hiang - fried and longish in shape, except the meat is replaced with vegetables (not the leafy type; some kind of lentils or beans I think) That was good. That was followed by garlic naan and Kashmiri naan (the one with sweet dried fruits - the nicest type of naan, IMO), with palak paneer and mushroom masala dip. Palak paneer is basically a curry of spinach (palak) ground into a gravy, with cottage cheese (paneer) cubes inside. Despite its greenish glow, it turned out to be rather appetising - you don't get any raw vegetable or cheesy taste, but something quite rich, especially with the moderate spices inside. The mushroom masala was also good: lots of button mushrooms cooked with masala gravy. Arg, I dunno how to describe the taste, but if you've tasted chicken masala gravy before, then it's like that la. Except with mushroom; the chicken doesn't really contribute much to the taste of masala I think. And lastly there was some thosai filled with potatoes and the mandatory spices. Which was really filling, and which my parents didn't really like. Lol. So despite the nice tasting food at the start they were left feeling sick of the food in the end =p

There's also this place called Infuzi over at Biopolis. I think the food is described as fusion, but the food was pretty much Western. Ooops I can't really remember much of the dishes except that they were small, so don't let the set dinner menu (choose 6 courses out of 8) scare you. Oh, there was a rather sinful duck liver (not goose liver; though it tastes rather similar) that was fantastic. And the steak was quite juicy and tender. One of the courses was listed as lobster, but it turned out to just have one measly piece that you can eat in one bite hahaha. Yeah, that's what I mean by small. Lots of emphasis on presenting the food daintily on oversized plates, so definitely not the place to eat like a pig =D Much more ex than Raj though - not my type of place. Hrmph. Given my shallow pockets, give me Adam Road nasi lemak anytime hahaha.




I'm curious. General question to anyone reading: what drives you in life? Love (romantic, familial, religious, etc)? Lust? Material wealth? Recognition? Intellectual stimulation? Altruism? Don't know quite how to phrase the last 2, and there's probably stuff I've missed out.

It's not accurate to say for myself right now, at such an impressionable age. But one thing I'm sure of is that I'm not driven by money. Which is why I'll never be a successful entrepreneur, no matter how many entrepreneurship programmes the gahmen throws at me =p Maybe it's to do with my pretty comfortable childhood, material-wise. And no, by that I don't mean that I live in opulence. And I think I'd pick love over recognition and intellectual stimulation: given a strictly either/or choice between a happy family and a Nobel Prize (not that I actually have any chance of winning one lol), I'd pick family in a heartbeat. Although seriously that may change over time I don't know.

Also can you truly consider altruism to be selfless? Without intending to demean their actions I suspect altruistic people are just wired in their brains to feel satisfaction from helping others, just as businessmen must have brains that feel high after making $$$. Read the wiki article, which differentiates altruistic behaviour from altruistic motivations - people can behave altruistically (seem to help others without benefit to themselves) but their desire to help others ultimately derives from selfish reasons (feeling good). The wiki article is interesting but too brief. Sigh. I guess it depends on definition - if altruism is charity without desire for material reward only, then the personal satisfaction bit doesn't detract from it. My bigger question: is it ever possible to have altruistic motivations?




In less relevant news I changed my dp. It's now the head (well, a picture of the head) of some hilarious camel doll/dude that my mom got back from Dubai. The camel has such improbably long and fat legs that it can't fit into a square pic for the dp. But it's the only soft toy I think I'll ever think is cute. Damn. I feel bimbo >.<

And I miss my ipod. Argh. It refuses to work most likely because the hard disk failed. Stupid Apple will only repair / replace ipods spoilt within their 1-year warranty period. After that they won't repair it even if you try to stuff money up their mouths to get them to do it. All they'll do is sell you a replacement at slightly more than half-price. Might have to go Sim Lim to see if any shops can fix it.

Crap, I'm still stuck on econs. Good luck, dear math, bio and chem :) :| :(
 
 
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