Experiment involving surface tension for water and alcohol

[sagigever]

Homework Statement

Lets assume I am doing an experiment of measuring surface tension, I have some

alcohol liquid and I measure $\gamma_m = 37 \frac{dyne}{cm}$ but I know that the surface tension of pure alchohol is $\gamma_a = 22 \frac{dyne}{cm}$ and on the other hand surface tension of pure water is $\gamma_w = 72 \frac{dyne}{cm}$ so it easy to conclude that I have mixture of water and alchohol, now I am asking how can I know the percent of alchohol and water in the mixture

Relevant Equations::

Relevant Equations

$\gamma= \frac{F}{L}$

I really have no idea how to approach this question, I was thinking write $F=mg$ but I am not sure if I can write that even though

 

[haruspex]

Homework Statement:: Let's assume I am doing an experiment of measuring surface tension, I have some
alcohol liquid and I measure $\gamma_m = 37 \frac{dyne}{cm}$ but I know that the surface tension of pure alchohol is $\gamma_a = 22 \frac{dyne}{cm}$ and on the other hand surface tension of pure water is $\gamma_w = 72 \frac{dyne}{cm}$ so it easy to conclude that I have mixture of water and alchohol, now I am asking how can I know the percent of alchohol and water in the mixture
Relevant Equations:: $\gamma= \frac{F}{L}$

I really have no idea how to approach this question, I was thinking write $F=mg$ but I am not sure if I can write that even though

This might help: https://arxiv.org/pdf/1802.01648.pdf
Or maybe: https://www.imedpub.com/articles/me...he-diffraction-pattern-of-surface-ripples.pdf

 

[berkeman]

Homework Statement:: Let's assume I am doing an experiment of measuring surface tension, I have some

alcohol liquid and I measure $\gamma_m = 37 \frac{dyne}{cm}$ but I know that the surface tension of pure alchohol is $\gamma_a = 22 \frac{dyne}{cm}$ and on the other hand surface tension of pure water is $\gamma_w = 72 \frac{dyne}{cm}$ so it easy to conclude that I have mixture of water and alchohol, now I am asking how can I know the percent of alchohol and water in the mixture

Relevant Equations::
Relevant Equations:: $\gamma= \frac{F}{L}$

I really have no idea how to approach this question, I was thinking write $F=mg$ but I am not sure if I can write that even though

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