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chemistry homework urgent help please

GCSE chemistry homework; mole calculations:

1: Calculate what mass of carbon you would need to reduce 15.9g of copper(II) oxide to copper by the reaction:

CuO + C –> Cu + CO

what steps do i take? i have the amount of moles for CuO by uusing moles=mass/Mr, but then what do i do…?

This closed post was written 1 year, 2 months ago | V/U/S: 331, 9, 3 | Edit Post | Report Post

chemistry, Copper, Carbon, General Certificate of Secondary Education, Mass, homework, Oxide, Copper(II) oxide, Mole, Calculation (How Tags Affect Reciprocity)

InsertFishHere 2 #
An Unknown Location | 1 year, 2 months ago (4 minutes after post)

you got a periodic table handy? u need the weigts of the elements..

you got a periodic table handy? u need the weigts of the elements..

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Anonymous1011 5 #
An Undisclosed Location | 1 year, 2 months ago (7 minutes after post)

Cu = 63.5
C = 12
O = 16

now what?

Cu = 63.5 C = 12 O = 16 now what?

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InsertFishHere 2 #
An Unknown Location | 1 year, 2 months ago (12 minutes after post)

umm, i actually have no idea, my minds gone blank… I dont do chemistry anymore, soz, i’ll get back to you if i remember…

umm, i actually have no idea, my minds gone blank... I dont do chemistry anymore, soz, i'll get back to you if i remember...

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Olly 2 #
An Undisclosed Location | 1 year, 2 months ago (21 minutes after post)

i get 80g of CuO needed to make 15gs of C
but i rounded Cu to 63.5
(i could be completly wrong)
good luck
dollyxXx

i get 80g of CuO needed to make 15gs of C but i rounded Cu to 63.5 (i could be completly wrong) good luck dollyxXx

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spiratec9 11 #
Burnaby, BC, CA | 1 year, 2 months ago (1 hour, 25 minutes after post)

CuO= 63.5+ 16=79.5

if you want only 15.9 then 15.9/79.5=0.2
or 1/5 mole

then 1/5 mole of carbon is 12/5=2.4

you need 2.4grams of carbon to do this reaction.

CuO= 63.5+ 16=79.5 if you want only 15.9 then 15.9/79.5=0.2 or 1/5 mole then 1/5 mole of carbon is 12/5=2.4 you need 2.4grams of carbon to do this reaction.

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Anonymous1011 5 #
An Undisclosed Location | 1 year, 2 months ago (1 hour, 32 minutes after post)

Whoooooooo i got thatt spiratec
Yaay!

WHOOOOOOOO I GOT THATT SPIRATEC yaay!

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