Qualification > Sciences
Edexcel CHEMISTRY DOUBTS!!!!
ksitna:
i need help with percentage yields
can someone help me?
Tammy:
--- Quote from: Summer :] on May 12, 2010, 03:39:00 pm ---
because
it says +- 0.01
therefore the range could be 0.21 - 0.01
and 0.21 + 0.01
so add those values together 0.01 + 0.01 = 0.02
its always this way i guess..thats what my teacher told us *shrugs* ::)
--- End quote ---
Alright!!! Thanks!!!
Summer :]:
--- Quote from: Tammy on May 12, 2010, 05:13:12 pm ---Alright!!! Thanks!!!
--- End quote ---
your welcome! By the way i just asked about
if it says percentage error
then you
(2 x error) / divide by whatever mass X 100
like i said previously
if it says its an error (not percentage)
multiply error by the mass or volume provided / 100
Summer :]:
does anyone know how to solve the last question on Jan '09 paper (old syllabus)?
I'll post the question if anyone is bothered or is not busy
Saladin:
I will answer.
Please state the paper number.
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