Recent content by iross75

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    Labeling Crucibles - Unique Identifier with Ferric Chloride

    We have a new batch of crucibles that I want to mark with an unique identifier. From memory a ferric chloride solution should do the trick?
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    Substituting NaOH for Ca(OH)2 in Buffering Capacity Experiment: Will it Work?

    Learnt the concepts a long time ago, have been a microbiologist for the last decade, and have now moved into an area where chemistry is required.
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    Substituting NaOH for Ca(OH)2 in Buffering Capacity Experiment: Will it Work?

    Damn...its not 0.34g is is 34%. 34% of the 0.07g is from the OH.
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    Substituting NaOH for Ca(OH)2 in Buffering Capacity Experiment: Will it Work?

    Homework Statement We are doing a experiement where we are testing the buffering capacity of soils. The text says to use Ca(OH)2, but we only have NaOH, which i plan to substitute. I just wanted to check that the solution i make up will have the equivalent OH. Homework Equations making...
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    Making up various concentraions of ethanol

    Yeah I have all the equipment, volumetric flasks and pipettes balances etc, it is a fully functioning laboratory. It has just been so long since I have had to work with moles and molarity that I have forgotten it. I just wanted to check i was on the right track. thanks for all of your...
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    Making up various concentraions of ethanol

    I am setting up a prac for a class next week, and need a little help on making up solutions of ethanol. (I am a microbiologist and haven't done any of this sort of stuff for years) The prac calls for 1M, 2M, 3M and 4M solutions of ethanol, and I have a 99% solution of ethanol. The way I...