albertlee

My teacher told me that there is no effects on the gravitational acceleration from the horizontal motion.... For eg, if we throw a ball horizonally in the same height as we drop the ball, both should reach the ground at the same time.... but I and my mate did an experiment. We put a trolley on a slope of a certain angle, although the trolley has constant acceleration, but it is alot different than the gravitational acceleration!! Any body can explain the principle behind it?? Albert

So, YT, do you mean that there is even none of gas Y in the so-called mixture?? Albert

Ohhhhhhh so.... when the two gases are placed together, their g/mol is 42 in average right?? In average, both sides need to offer 42g....., the higher g/mol must give less amount of moles but this question is not actually correct to me. There is 4/7 of gas X and 3/7 of gas Y, according to my calculation...., and if 4/7 is 1 mol, then 3/7 should be less....., then when we divide 84g (the total mass) by the amount of the total mols, the result couldn't be 42g/mol Any help? Albert

Sorry, for duplicating post... but could any one help me?? I am stuck on this.... thx in advance !!

Any body has idea???

Why does'nt Apple design a version of OS X that runs under X86 architecture??

I know they dont actually chemically "mix" together..... Can you give me a bit of chemical and mathematical manipulation?? Albert

A gas X is 42g/mol A gas Y is 56g/mol If both gas are in mixture, the mixture is 42g/mol which gas in that mixture is more abundant??? X or Y?? Can any one explain to me in details as well?? thx Albert

How about it is 5.6g/mol, instead of 56g/mol??? Albert

How to find the molecular formula of the below question?? A gas with 87.5% of Carbon, and the remainning is Hydrogen, if the gas is 56g/mol, then what is its molecular formula?? Can you guys also show me the calculation?? thx in advance Albert

thx mak!!

Hey.... I found that electronegativity is a quite major part of chemistry...., because it tells about the bonding the atoms are going to form.... and tells about the relationship between attraction.... Can any one give me as good as possible site which gives info about electronegativity and related issue?? thx Albert

So, just for sure Na + + OH- for the above ions, the elctron from Na gives to the Oxygen side, not Hydrogen side, right?? because O has more negativity than Hydrogen, that's the reason?? Albert

It works now....!! Hooray!!!

Hey... The interesting thing is....... try Amazon.fr, Amazon.de, Amazon.co.jp... All these different Amazons are very very slow as well..... Albert

By Jove I was going to buy some books for my school studies..... any way, thx u guys, for the responds By the way, for personal curiosity, what is the point of "Service Denial" attack?? What does that do good for hackers?? Albert Wait for some big news from Amazon

I am sure my internet connection is perfectly working... but when I try to access Amazon.com, or Amazon.co.uk It takes either a very very long time, or it is mostly unaccessible... I tried ping as well, and the result is 4 times the "request timeout" Can any one try to access Amazon, and see is it accessible?? if you have same result as me or not... May be it is just temporarily down..., but AMazon is really a big site... It seems impossible for this... thx for Any respond Albert

Oh....... It is just the same principle like salt dissolving in water.... First K is reacted water OH, form KOH,... and the water molecules overcome the attraction of this ionic bonding, thus the solution conducts electricity... right? By the way, may this question might be a bit off topic, as I see that H2 is gas, why it cant be ionic?? I mean, would'nt if one of the hydrogen looses one electron and the other accepts it, the bonding will be more firm?? Albert

thx for you guys.... but now I want to know more.... I assume that pottasium first having reaction with water, and then dissolve..., but dissolve in what??? Hydrogen are released, I think... Any way, can any one give me a full chemical equation for this?? thx Albert

Any body can help??

so, what is the answer to this?? Can the mere electrons be attracted by the partial chages in this way? in the situation that metals are being left in water... Albert

implying what primarygun?? Any one to my previous message??

thx...

Can any one please help on my previous message?? Apreciate Albert

Thx jdurg... By the way, can any one help on my second previous message?? that is, Can the mere electrons be attracted by the partial chages in this way? thx Albert