u guys, i drew a chormatography diagram for the first, its okay rite?
for the energy thing i got -530
for the adv of PLA i rote, its non biodegradable and wont pollute the environment wen burnt with harmful gases (CO2) :S
the source for nitrogen, i said nitrogen fixation bacteria
i said we wash the precipitate to remove impurities
and put it in the oven to get it in molten state if needed
cn anyone pls verify my answers..?
the question after the limiting agent one, was how much of mass of SiF was collected rite? i forgot
by the look of it, i think i lost 10-15 marks
does anyone, by any chance noe if that cn still be an A/A*
i thoght the paper was too long, we usually get 7 questions. and it was a whole lotta math/bio, weird.
