Qualification > Sciences

chem question

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nid404:
why would you multiply it by 3

Q80BOY:

--- Quote from: slvri on September 16, 2009, 04:18:49 pm ---1-1.33
multiply by 3
3-4
formula is Pb3O4

--- End quote ---

i LOVE u !!!

thats what i wanted .. what do i multiply it by .. ur the man dude ..

thnxx alot !! ;D

Q80BOY:

--- Quote from: nid404 on September 16, 2009, 04:22:02 pm ---why would you multiply it by 3

--- End quote ---

to turn the decimal into a whole number ..

slvri:

--- Quote from: nid404 on September 16, 2009, 04:22:02 pm ---why would you multiply it by 3

--- End quote ---
to make the ratio of lead to oxygen a whole number
since 1.33 is basically 4/3
so1*3:4/3*3=3:4
and q80boy.........no problem ;)

Ghost Of Highbury:

--- Quote from: Q80BOY on September 16, 2009, 01:11:15 pm ---hey guys, i have another question ..

Find the Empeical Formula of the following oxide of lead.

It contains 9.7g of lead to every 1g of oxygen

(RAM values .. Pb= 207, O= 16)

the answer is Pb3O4

i dunno what to do after we divide by the smallest answer =/

please help :)

--- End quote ---

u had ritten Pb3O3...wen asked if there was any change ..u said "no" the q was correct..

and y do v multiply only with 3 .........  u need to divide the mass of d substance wid 228.28 and then multiply it with PbO1.33

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