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Chemistry: Post your doubts here!
Ah.. So it it based on an assumption. I understand now. Thanks alot! =) Hello, thanks for replying too, but I was actually wondering why do they use [Ag(NH3)2] as 0.1 , but biba explained it to me already, so thanks anyways! =) -
Chemistry: Post your doubts here!
Hello, I need help here. For 9701_w09_qp_42 , question 2d (ii), I don't quite get how the question is done. -
Mathematics: Post your doubts here!
Yes, you are right! I am glad that you understood the question. =) -
Mathematics: Post your doubts here!
Since 1+√2i and 1-√2i are the two imaginary roots, which means x=1+√2i and x=1-√2i . Equate them, ( x - [1+√2i] ) ( x - [1-√2i] ) and expand them. Use the resulting equation ( x^2 -2x + 3 ) to do long division with P(x). You'll get a quadratic equation in return, then just use the usual way to... -
Mathematics: Post your doubts here!
After I went through the question. The initial mass (t=0) of substance B, which is also y is 70. The question asks for percentage mass remaining. Since the mass remaining as t increase to infinite is 70/e, the percentage mass remaining should be (remaining/initial) x 100 , which is also... -
Mathematics: Post your doubts here!
You can get the free trial version here, its a pretty handy tool so its good to have it in your PC. =) http://www.rarlab.com/download.htm -
Mathematics: Post your doubts here!
Thank youu!! I confused the tangent formula with the distance formula. I must be really sleepy now. But thanks to you I got it now! =) -
Mathematics: Post your doubts here!
Hello , is there any kind soul out there who can help me with Q7 (ii) ? I don't know how to solve it. 9709_s11_qp_32 -
How was Chemistry P5?
Yeah Yeah, I'm aware of that, which is why I wanted to write bromothymol blue. But since i forgot the colour change, phenolphthalein was the closest thing I can think of. =/ -
How was Chemistry P5?
I wan I wanted to write bromothymol blue but I forgot the colour change so I wrote phenolphthalein instead. :/ -
Mechanics (brother of physics)
Oh. I just had a moment of realisation. You mean a=0-4/4 is actually a=(v-u)/t ? My god. How can I even forget that. Thank you so so much! ;) -
Mechanics (brother of physics)
Strangely I know how to solve the question but have no single idea on how to find the acceleration. Mind teaching me? :)