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Govind Rao
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Density of Mixtures

09/19/2013 6:02 AM

How does on e calculate density of mixtures, containing Iron fillings, Carbon Black, sodium silicate in liquid form
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#1

Re: Density of mixtures

09/19/2013 6:25 AM

Determine the mass of a representative quantity.

.

Measure the volume of that representative quantity.

.

Calculate density as the quotient of the mass divided by the volume.

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IdeaSmith
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#2
In reply to #1

Re: Density of mixtures

09/19/2013 9:23 AM

Exactly!

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Tornado
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#3

Re: Density of Mixtures

09/19/2013 9:41 AM

ΣW/ΣV

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finfin
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#4

Re: Density of Mixtures

09/19/2013 11:33 PM

Try this:
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James Stewart
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#5

Re: Density of Mixtures

09/20/2013 9:17 AM

I must agree with "truth is not a compromise". Your best option is compound the mixture, or a set of mixtures, and catalog the results of the density determinations.

As far as I know, any attempts to estimate the bulk density from the known densities of the materials will result in a higher number, since you will undoubtedly incorporate some air bubbles with the iron filings when you perform the experiment (unless you de-gas the mixture by pulling a vacuum). Or you could use controlled mixing/agitation for extended periods of time on a larger blend (say 2-3L) while removing small samples of known volume for weighings, and plot them. The line could then be extrapolated to some asymptotic value that represents the maximum density of the controlled mixture (for each proportion). Once completed, you will have a data set that can be used for process control?

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finfin
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#6

Re: Density of Mixtures

09/20/2013 11:59 AM

Temperature has an effect it may very well be significant to your results.
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#7
In reply to #6

Re: Density of Mixtures

09/20/2013 2:33 PM

If you are going to mention temperature, you should mention some of the other things that can have an effect....

Pressure.

Atmosphere.

Local Gravity.

Any significant variations in the speed of light.

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finfin
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#8

Re: Density of Mixtures

09/21/2013 10:00 AM

Watch out for that gravity storm

It don't give no warning signs - Jimmy Buffett
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