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units conversion

Hi everyone,

Does anyone know how to convert O2 consumption rate that has units of mol/l/s into
something that has units of s^-1.
I want to convert the units because I need to use 's^-1' for my mathematical model. I searched everywhere but couldn't find an answer.

Thanks in advance,
May
well to get something in units of mols l−1 s−1mols \, l^{-1} \, s^{-1} into something with the units s−1s^{-1} you're going to have to multiply it by something with units l mols−1l \, mols^{-1} or divide by something with the units mols l−1mols \, l^{-1}

mols l−1 mols \, l^{-1} sounds like the more obvious thing
(edited 13 years ago)
Reply 2
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may
OP
Original post by didgeridoo12uk
well to get something in units of mols l−1 s−1mols \, l^{-1} \, s^{-1} into something with the units s−1s^{-1} you're going to have to multiply it by something with units l mols−1l \, mols^{-1} or divide by something with the units mols l−1mols \, l^{-1}


you mean multiply it by something with units mol^-1 l ? yes I thought about that... but what exactly is this quantity?
Original post by may
you mean multiply it by something with units mol^-1 l ? yes I thought about that... but what exactly is this quantity?


well dividing by something with mols l-1 makes more sense as i'm sure you can work out how many moles in a litre
Reply 4
Avatar for Kareir
Kareir
2
Original post by may
Hi everyone,

Does anyone know how to convert O2 consumption rate that has units of mol/l/s into
something that has units of s^-1.
I want to convert the units because I need to use 's^-1' for my mathematical model. I searched everywhere but couldn't find an answer.

Thanks in advance,
May


Um. I could be wrong, but I'm fairly sure that mol/l/s is

'Moles Per Litre Per Second'

Which is ml−1s−1m l^{-1} s^{-1}

_Kar.
Reply 5
Avatar for may
may
OP
Original post by didgeridoo12uk
well dividing by something with mols l-1 makes more sense as i'm sure you can work out how many moles in a litre


thanks for your reply but I'm not a chemist and wouldn't know how to but let me have a go:

say O2 consumption rate was 7x10^-5 mol/l/s

1mole O2 = 32 g

then what?

and what do both units mean in terms of O2 consumption?
Reply 6
Avatar for may
may
OP
Original post by Kareir
Um. I could be wrong, but I'm fairly sure that mol/l/s is

'Moles Per Litre Per Second'

Which is ml−1s−1m l^{-1} s^{-1}

_Kar.


yes, thats just another way of writing it
Reply 7
Avatar for Kareir
Kareir
2
Original post by may
yes, thats just another way of writing it


Oh, you meant just s−1s^{-1} units, sorry :colondollar:

Um, I dont know... Find the litres per mole and multiply by that? That'd be

lm−1×ml−1s−1=s−1 l m^{-1} \times m l^{-1} s^{-1} = s^{-1}

_Kar.
Reply 8
Avatar for may
may
OP
Original post by Kareir
Oh, you meant just s−1s^{-1} units, sorry :colondollar:

Um, I dont know... Find the litres per mole and multiply by that? That'd be

lm−1×ml−1s−1=s−1 l m^{-1} \times m l^{-1} s^{-1} = s^{-1}

_Kar.



so how do I find the litres per mole? thats my question
Reply 9
Avatar for Kareir
Kareir
2
Original post by may
so how do I find the litres per mole? thats my question


Google: 26.2 L/mol for oxygen.

_Kar.

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