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Unit Conversion mol/kg to mmol/g

Posted: Thu Jun 24, 2021 4:02 pm
by cheme209
Hey!

Would someone be able to show me how to do the unit conversion for 1.5 mol/kg to mmol/g and mg/g?

Thank you so much!

Re: Unit Conversion mol/kg to mmol/g

Posted: Thu Jun 24, 2021 11:41 pm
by ChenBeier
1,5 mol/ kg = 1,5 mol/1000g = 0,0015 mol/ g = 1,5 mmol/g The number doesnt change.
For mg/g we need molar mass , without its impossible to calculate.

Re: Unit Conversion mol/kg to mmol/g

Posted: Fri Jun 25, 2021 12:23 pm
by cheme209
For mg/g the molar mass is 44.01

Also, how would I be able to convert 3.7 mmol/L to mmol/g?

Thanks for your help!

Re: Unit Conversion mol/kg to mmol/g

Posted: Fri Jun 25, 2021 12:36 pm
by ChenBeier
44.01 Apples or what. Need correct unit. Then can use m = n* M
For converting L to g need specific gravity.

Re: Unit Conversion mol/kg to mmol/g

Posted: Fri Jun 25, 2021 2:30 pm
by Orcio_Dojek
3.7 mmol/L is very diluted solution, so gravity is not distinct from 1 g / ml.

Re: Unit Conversion mol/kg to mmol/g

Posted: Fri Jun 25, 2021 7:37 pm
by cheme209
The molar mass is 44.01 g/mol

The specific gravity is for CO2 so 1.5189

Re: Unit Conversion mol/kg to mmol/g

Posted: Fri Jun 25, 2021 11:55 pm
by ChenBeier
You need the specific gravity of the solution not from CO2. As already mentioned you can say 1 kg ~1 L but this is inaccurate.

Re: Unit Conversion mol/kg to mmol/g

Posted: Sat Jun 26, 2021 12:38 am
by Orcio_Dojek
@cheme209

3,7 mmol / l = 0,0037 mmol / g = 0,163 mg / g

Re: Unit Conversion mol/kg to mmol/g

Posted: Mon Jun 28, 2021 1:24 pm
by cheme209
1.3 M NaOH solution in water

Re: Unit Conversion mol/kg to mmol/g

Posted: Mon Jun 28, 2021 1:32 pm
by ChenBeier
What is the question with it.

Re: Unit Conversion mol/kg to mmol/g

Posted: Mon Jun 28, 2021 1:44 pm
by cheme209
3.7 mmol/L of CO2 in 1.3 M NaOH solution

convert 3.7 mmol/L to mmol/g

Re: Unit Conversion mol/kg to mmol/g

Posted: Mon Jun 28, 2021 2:03 pm
by ChenBeier
If CO2 will dissolved in NaOH solution, then it will be converted to sodiumcarbonate.
There is no free carbondioxide left.
1,3 m NaOH has specific gravity of 1,05 g/ml
With this number you could calculate further but its hypothetic.

Re: Unit Conversion mol/kg to mmol/g

Posted: Tue Sep 28, 2021 2:37 am
by Warner Mortensen
I tried and here i am with the solution (let me know this is right or not?)
1 g / mol = 0.001 kg / mol
I mol / kg = 1 mm / g
The conversion will now be pretty simple.
1.5 mol / kg = 1.5 mol / 1000g = 0.0015 mol / g = 1.5 mmol / g
Mg / g is impossible to calculate without the molar mass.
The value of 1.5 does not change for the rest.

Re: Unit Conversion mol/kg to mmol/g

Posted: Tue Sep 28, 2021 8:08 am
by ChenBeier
I answered already in my first post. Why do you copy this again.

Re: Unit Conversion mol/kg to mmol/g

Posted: Thu Sep 30, 2021 8:38 am
by Warner Mortensen
I missed it. Sorry