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SO i should go for each and every topic eh
Okay
Thanks for the help
have you got any good notes on this section?
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SO i should go for each and every topic eh
Okay
Thanks for the help
have you got any good notes on this section?
View attachment 36635
if we induce a magnetism in a simple i rod this way i.e. not making them touch each other. will the iron rod still posssess magnetism even after the magnet is taken away?
can somebody tell me what does this "pointing in same direction" mean?Physicists believe that the orbiting motion of electrons in a magnetic material makes each atom an atomic magnet.A group of such atomic magnets pointing in the same direction is called a magnetic domain.
i think it means the same direction of motion of electrons in the simplest waycan somebody tell me what does this "pointing in same direction" mean?
now iron is a soft magnetic material which easily magnetizes and demagnetizes and the magnet is only temporary. Hence they are also called permanent magnetic materialView attachment 36635
if we induce a magnetism in a simple i rod this way i.e. not making them touch each other. will the iron rod still posssess magnetism even after the magnet is taken away?
go through past papersAhhh. Can someone tell me how to prepare for atp's? I mean should i just go thro past papers & nothing else or just rely on my knowledge
atp is the easiest part of the paperAhhh. Can someone tell me how to prepare for atp's? I mean should i just go thro past papers & nothing else or just rely on my knowledge
yes u do have a pointHi.
I've come across a bit of a tricky question in the Oct/Nov 2013 chemistry paper 21.
Its question B9 part b. Here's the question
''The reaction between ethanoic acid and sodium hydroxide is described as a neutralisation reaction. Write the simplest ionic equation for this reaction''
Now, it is known that the simplest ionic eq is H+ + OH- = H2O in this base of acid-base neutralisation. But since ethanoic is a weak acid undergoing partial dissociation into H+ ions the ionic eq should be
CH3COOH + OH- = CH3COO- + H+
Im confused as to which eq is correct. Could someone please clarify this ?
Thanks in advance !!
Btw-ive attached a screenshot of the question.
Here you can see the exact same question(NaOH with C2H5COOH) but the ionic equation in the ms is given with the ethanoate ion instead of the hydroxide ion.I'm a bit confused to what to do in case we face this question in our exam.and yes u shud stick to the CIE one. in the marking scheme, the answer is the same as my last equation.
so yes u shud reserve that answer to the neutralization questions
there is no need to worryHere you can see the exact same question(NaOH with C2H5COOH) but the ionic equation in the ms is given with the ethanoate ion instead of the hydroxide ion.I'm a bit confused to what to do in case we face this question in our exam.
Thanks a lot!I was unable to find the er so i was unsure
npThanks a lot!I was unable to find the er so i was unsure
Thanks a lot!
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