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Topic: Mls to Moles (Oxygen)  (Read 2620 times)

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Offline dazza95

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Mls to Moles (Oxygen)
« on: August 23, 2012, 02:18:33 AM »
How do i convert 10mls of oxygen gas to moles?

pv=nrt?
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Offline Hunter2

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Re: Mls to Moles (Oxygen)
« Reply #1 on: August 23, 2012, 02:48:08 AM »
Yes correct or shorter 1 mol ~ 22,4 l
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Offline dazza95

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Re: Mls to Moles (Oxygen)
« Reply #2 on: August 23, 2012, 10:38:12 PM »
Is this correct?
not sure on what units to use in each case though..
10ml of oxygen gas to moles

Pv=nrt
101325 X 1.0X10^-5 = n X 8.314 X 299.15
=4.0739677moles?
« Last Edit: August 23, 2012, 11:15:11 PM by dazza95 »
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Offline Hunter2

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Re: Mls to Moles (Oxygen)
« Reply #3 on: August 24, 2012, 01:00:34 AM »
The formula is correct but you have some problem with the mathematics.

it is 0.4 mmol
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Offline Vidya

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Re: Mls to Moles (Oxygen)
« Reply #4 on: August 24, 2012, 01:22:50 AM »
yes your formula is  right and you have used P in pascal ,T in kelvin and R in J/mol.K
You did error in coverting mL to L  and T should be 273.15K

You can use any one of these methods also
22.4 L = 1mole
 10mL or 0.01 L will have how many moles?

or
PV=nRT
P =1atm
V= 0.01L
R=0.0821 L. atm/mol.K
n=PV/RT
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