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aluminium and carbon means the formula will be (AlC or Al +C) ?
thanks alot, helpedAlxCy +H2O-->Al(OH)3+CH4
=0.03 : ___ :0.12 : 0.09
= 1 : ___ : 4 : 3
= AlxCy +H2O--> 4Al(OH)3+ 3CH4 (use the ratio to balance the right side)
= Al4C3+12H2O-->4Al(OH)3+ 3CH4 (now balance the complete equation)
yeah! It's worth at least 1 mark
Yeah! It's worth at least 1 mark
its 75 % i guessis 60+ out of 80 bad in chemistry paper 3 ?
It's a Bis 60+ out of 80 bad in chemistry paper 3 ?
k thx!
thn wats the range for A?It's a B
anytime
About 80% , it's different every year
which ppr was that?
The grade boundries are getting lower every year so I'm guessing it would be an A this year
These marks would add up to 90%, your teacher probably meant without a curve.The grade boundries are getting lower every year so I'm guessing it would be an A this year
If you're aiming for an A* in the end you have to get a max of 3 faults in paper 1, 10 in paper 3 and 5 in paper 6 ( my teacher told me this)
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