November 30, 2020, 03:44:30 AM
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### Topic: Conversion PO4-P  (Read 269 times)

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#### faberaussie

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##### Conversion PO4-P
« on: November 05, 2020, 05:45:58 AM »
Hi all, I don't know if this is the right place where to post this question.
In my dataset, I have data relative to PO4-P in grams and I would like to convert them in moles.
My doubt: do I have to use the molecular weight of PO4 (about 95 g/mol) or the mass weight of P (about 31 g/mol) to do the conversion? thank you

#### chenbeier

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##### Re: Conversion PO4-P
« Reply #1 on: November 05, 2020, 06:27:42 AM »
What do you have given, gram of phosphate or gram of phosphorous.
The molar masses correspont to them.

#### faberaussie

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##### Re: Conversion PO4-P
« Reply #2 on: November 05, 2020, 06:39:14 AM »
I have grams of PO4-P. So should I consider it as grams of phosphorus? Thank you

#### chenbeier

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##### Re: Conversion PO4-P
« Reply #3 on: November 05, 2020, 04:55:45 PM »
I don't understand you.

For example do you have given 100g PO4 or do you have given 100g P.

#### faberaussie

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##### Re: Conversion PO4-P
« Reply #4 on: November 06, 2020, 03:31:22 AM »
Sorry if I was not clear.
In my dataset grams of PO4-P are reported, but I don't know if they were measured as P or as PO4.
So I suppose they correspond to grams of P in PO4. Right?
If this is the case, how can I convert grams of PO4-P in moles?
Thank you

#### AWK

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##### Re: Conversion PO4-P
« Reply #5 on: November 06, 2020, 03:48:43 AM »
Sorry if I was not clear.
So I suppose they correspond to grams of P in PO4. Right?
Thank you

Converting mass to moles is the complete start of general chemistry.
AWK

#### Borek

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##### Re: Conversion PO4-P
« Reply #6 on: November 06, 2020, 03:49:21 AM »
_IF_ it is phosphate as phosphorus, then you have mass of P and molar mass of P, plug and chug.
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info, pH-meter.info

#### faberaussie

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##### Re: Conversion PO4-P
« Reply #7 on: November 06, 2020, 03:53:02 AM »
Ok thank you