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Topic: Concentration converting (m/v)% to (m/m)%  (Read 8818 times)

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Offline Pashinko

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Concentration converting (m/v)% to (m/m)%
« on: July 28, 2016, 03:57:03 PM »
How would I go about converting the concentration of a 5.67% (m/v) solution to its %(m/m) equivalent. The only thing that is given is the density of the solution which is 1.2 g/ml.

Offline sjb

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Re: Concentration converting (m/v)% to (m/m)%
« Reply #1 on: July 28, 2016, 04:18:32 PM »
How would I go about converting the concentration of a 5.67% (m/v) solution to its %(m/m) equivalent. The only thing that is given is the density of the solution which is 1.2 g/ml.

Imagine for instance you have 100 ml of this solution. What is the mass of this, and how much is solute?

Offline Pashinko

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Re: Concentration converting (m/v)% to (m/m)%
« Reply #2 on: July 28, 2016, 04:53:59 PM »
The solution would be 120 g and the solute would be 5.67 g?

Offline AWK

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Re: Concentration converting (m/v)% to (m/m)%
« Reply #3 on: July 28, 2016, 06:20:35 PM »
So calculation of percentage (m/m) is straightforward.
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Offline Pashinko

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Re: Concentration converting (m/v)% to (m/m)%
« Reply #4 on: July 29, 2016, 03:20:36 AM »
So it would be 5.67 g / 120 g * 100 = 4.73% (m/m)

Offline AWK

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Re: Concentration converting (m/v)% to (m/m)%
« Reply #5 on: July 29, 2016, 04:03:07 AM »
Exactly, except significant digits. In density you have 2 digits, than the final result should also contain 2 digits.
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