Biology; Chemistry; Physics: Post your doubts here!

[Tharindu]

For english for the report, should we write a story like or just the points..

 

[Spidey21]

For english for the report, should we write a story like or just the points..

you have to write it in a progression...not point form!!

 

[osama]

View attachment 8521
I m confused in this part. I used the mole ratio solution but the answer in Marking scheme is '10800g'. I don't think that's possible becuase, that would be the mass of Octane and to calculate the mass of Carbon dioxide, shouldn't we use the mole ratio?

yes the answer is 10800.....use ur common sense this is the simplest of questions.....if 108 g CO2 is produced every kilometre then obviously 10800 g of carbon will be emitted by the car..

 

[Tharindu]

you have to write it in a progression...not point form!!

Should we include our feelings,emoticons,etc...or just the thing which happend

 

[Spidey21]

Should we include our feelings,emoticons,etc...or just the thing which happend

in a report you just tell what happened...you dont add in your views its supposed be FACTUAL report!!

 

[Mayedah]

grams.... duh.. done this question a million times

What answer did u get btw .?

 

[Mayedah]

wat else was i trying 2 tell u last night miss?
neways... good u got it now

Yeah thnx !

 

[bogus]

What answer did u get btw .?

didn't rote learn it but i know how to solve it

 

[Mayedah]

didn't rote learn it but i know how to solve it

Ahan btw i got Mr 200 !

 

[Mayedah]

http://www.xtremepapers.com/papers/...nal O Level/Physics (5054)/5054_s10_qp_22.pdf
Can sombody explain question 6

 

[Rimsa]

http://www.xtremepapers.com/papers/CIE/Cambridge International O Level/Physics (5054)/5054_s10_qp_22.pdf
Can sombody explain question 6

a) i) electrons (cuz it becomes positively charged so that means it lost negative charge)
ii) neutralized cuz the conducting tires provide a medium for charge to flow though. -ve charge from earth neutralizes +ve charge in the plane
iii) cuz presence of any charge will cause sparking in fuel tank

 

[Spidey21]

a) i) electrons (cuz it becomes positively charged so that means it lost negative charge)
ii) neutralized cuz the conducting tires provide a medium for charge to flow though. -ve charge from earth neutralizes +ve charge in the plane
iii) cuz presence of any charge will cause sparking in fuel tank

WATERCOOLER is YOURS!!

 

[Spidey21]

yes the answer is 10800.....use ur common sense this is the simplest of questions.....if 108 g CO2 is produced every kilometre then obviously 10800 g of carbon will be emitted by the car..

yeah dude just multiply it by 100...??

 

[Rimsa]

WATERCOOLER is YOURS!!

 

[Spidey21]

thats what you get when you answer a question right...

well back to the topic!!

 

[Rimsa]

thats what you get when you answer a question right...

well back to the topic!!

ohhhh get me cie exam. dunt need a cooler =P
thanks

 

[Spidey21]

ohhhh get me cie exam. dunt need a cooler =P
thanks

np.lol...

 

[GetSomeLife]

Let's see whose the genius here:
Al2O3 is amphoteric. Yet it covers and stops Aluminium from reacting with acidic food or drinks. What's your explanation?

No genius yet?

 

[SalmanPakRocks]

No genius yet?

Why don't 'you' explain it?

 

[Spidey21]

No genius yet?

in the question...you want the explanation for??