Mayhem's latest activity
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Mayhem replied to the thread Humidity of a saturated NaCl solution with anticaking additive.I mean salt for technical use, like for water softening (dish washers) or deicing, should be cheaper than food grade table salt. -
Mayhem replied to the thread Humidity of a saturated NaCl solution with anticaking additive.Can't you use general purpose salt (non food grade) containing fewer additives. What does the salt used for dish washers contain aside...
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Mayhem replied to the thread Resists for etching Aluminium with NaOH.Why are you resorting to chemical means rather than simply poking holes? 0.3 mm is just aluminium foil?
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Mayhem replied to the thread Random Thoughts 7.Yes, because intelligent life wouldn't visit a planet where my in-laws reside.
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Mayhem replied to the thread Solubility of MgSO47H2O in water.Don't use SDS and similar date for solubility. They can be wildly inaccurate. A reaxys search shows that the solubility of the...
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Mayhem replied to the thread Random Thoughts 7."Why haven't aliens visited us?" For the same reason dolphins don't build rocket ships. Intelligent life is not necessarily curious life.
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Mayhem replied to the thread Enthalpy - published values.Please provide your reference. One must be very careful when interpreting enthalpy values.
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Mayhem replied to the thread Why does having 8 valence electrons make an element inert?.Strictly speaking, Ca does not have a filled outer shell in the sense you are referring to. It has 2 e in the 4s orbital. Elemental Ca...
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Mayhem replied to the thread Solubility of MgSO47H2O in water.Saturate at 40 C, cool to r.t. under lid. Add water until dissolved or simply just filter and add 5% more water.
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Mayhem replied to the thread Solubility of MgSO47H2O in water.Since your solvent and your cocrystallized solvent are the same, you can just choose what you want to do. When specifying w/w%, writing...
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Mayhem replied to the thread Solubility of MgSO47H2O in water.The water content does contribute to the final amount of water. But when you prepare a 1000 ml solution, you first dissolve the salt in...
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Mayhem replied to the thread Solubility of MgSO47H2O in water.Hydration will only aid water dissolution (for example, anhydrous CrCl3 is practically insoluble in neutral water but its hexahydrate...
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Mayhem reacted to Muu9's post in the thread How would you describe briefly your own mental modeling of chemistry? with
Like.
There are a few metaphors/mental models/mnemonics I like to use for general chemistry, like thinking of chemical energy minimization as... -
Mayhem replied to the thread How would you describe briefly your own mental modeling of chemistry?.Broadly, chemistry is the study of quantitative results through qualitative models. Spectroscopy, thermodynamics, and kinetics are...
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Mayhem replied to the thread How would you describe briefly your own mental modeling of chemistry?.My advisor explained something to me related to a project involving transition metal complexes of EDTA-type chelators, and mentioned how...