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Mathematics: Post your doubts here!
well, i did it with CA x BA (same as what u said, BA x CA), and I get it wrong. I didn´t understand what u said about the letter in the middle, could you clarify please? Also, if anyone can answer me, in the marking scheme it said for doing vector products, choose any vector parallel to the... -
Mathematics: Post your doubts here!
Have you read what I wrote? :( I dont get why i get a WRONG answer using AC x AB or CA x BA, but if you use any other two vectors, you get the correct normal to the plane. :( -
Mathematics: Post your doubts here!
I´ll post this once, once, again... I´ve got a question and would appreciate some help. For Q9(i), if you are trying to find the normal to the plane using vector product, why if you do AC x AB or CA x BA you get a wrong answer, but if you use any other two vectors, you get the correct normal... -
Chemistry: Post your doubts here!
Isn´t this supposed to be with cold dilute acidifed KMnO4? -
Mathematics: Post your doubts here!
Can anyone explain me (with diagram) how to do Q9(ii) please? Thank you in advance! -
Chemistry: Post your doubts here!
You must have a good teacher, because other people have **** "teachers" and therefore struggle to achieve the grades they are "supposed" to have. As always, being alone is better that being with someone who influences you badly. And i disagree with your argument that an A should be on 99% ^^... -
Mathematics: Post your doubts here!
Well, as i mentioned before, I also did it with CA x CB (and many other combinations) and got it right, so your theory fall to pieces there ^^ I just don´t get why using AC x AB or CA x BA I get the wrong answer! :( -
Mathematics: Post your doubts here!
Good! I´m not alone anymore! :D Someone shine some light on us please! :P -
Chemistry: Post your doubts here!
I did say second option was correct ^^ -
Mathematics: Post your doubts here!
Well, I also tried CA x CB and get the correct answer, I just don´t get why using AC x AB or CA x BA I get the wrong answer. :( -
Mathematics: Post your doubts here!
Can someone answer my above post please? ^^ -
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Mathematics: Post your doubts here!
I´ll post this again... :( please someone help! I´ve got a question and would appreciate some help. For Q9(i), if you are trying to find the normal to the plane using vector product, why if you do AC x AB or CA x BA you get a wrong answer, but if you use any other two vectors, you get the... -
Chemistry: Post your doubts here!
I´m not sure if I understand the question but... Filtre it maybe? Using filter paper or something. -
Mathematics: Post your doubts here!
Please... help me with these two questions. (Summer 2007, Paper 3) https://www.xtremepapers.com/community/threads/mathematics-post-your-doubts-here.9599/page-603 -
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Chemistry: Post your doubts here!
To your first question, you are correct. To your second question, it depends on the alkane used but they burn with orangy colour, which turns into black as the hydrocarbon chain increases -
Mathematics: Post your doubts here!
Also, how do you do Q9(ii). -
Mathematics: Post your doubts here!
I´ve got a question and would appreciate some help. For Q9(i), if you are trying to find the normal to the plane using vector product, why if you do AC x AB or CA x BA you get a wrong answer, but if you use any other two vectors, you get the correct normal to the plane? The only difference for... -
Chemistry: Post your doubts here!
Basically because it has a week metallic bond. The mercury atoms doesn´t donate as much of their valence electrons to the cloud of electrons, so the electrostatic forces between the mercury cation and the delocalised sea of electrons isn´t as a strong metallic bond as say in magnesium, where...