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All things u need to know about Chemistry P1 &P3

The Chill Master

The Chill Master

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Faiza Anwar said:
yeah !
Click to expand...
i got the answer bu using volume find no.of moles
no.of moles=volume/24
150/24=6.25
100/24=4.17
20/24=0.83
now divide by smallest mole
6.25/0.83=7.5
4.17/0.83=5
0.83/0.83=1

means we need 5 moles of Co2 mens eqn for co2 is 5CO2
now we need 7.5 moles of Oxygen so it is 7.5O2
now write
CH+7.5O2=5Co2+H2O
now balance it
means
5 carbon atoms required since u cannot change the values obtained
 
F

Faiza Anwar

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The Chill Master said:
i got the answer bu using volume find no.of moles
no.of moles=volume/24
150/24=6.25
100/24=4.17
20/24=0.83
now divide by smallest mole
6.25/0.83=7.5
4.17/0.83=5
0.83/0.83=1

means we need 5 moles of Co2 mens eqn for co2 is 5CO2
now we need 7.5 moles of Oxygen so it is 7.5O2
now write
CH+7.5O2=5Co2+H2O
now balance it
means
5 carbon atoms required since u cannot change the values obtained
Click to expand...
i also tried solving the same way but i got diff values for moles nd i didn't know how to apply them..
but u have taken the volume in cm^3... but we have to convert it in dm^3 before dividing by 24???
 
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