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Identifying unknown chemical

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Borek:

--- Quote from: HerrSwampy on October 11, 2022, 02:18:24 PM ---It could have been MgO, but i am not sure at all

--- End quote ---

Would MgO easily dissolve in water?


--- Quote from: HerrSwampy on October 11, 2022, 12:46:53 PM ---molar mass: 45,21088 g/mol
--- End quote ---

If it is your experimental value, it opens many more options. What is the heaviest element that the compound can contain? It is a compound, how many elements minimum does it contain? If so - what are possible molar masses of these element? Which elements fit? It is soluble - does it limit the selection of compounds? And so on.

Plus: often you are given a list of compounds to choose from.

HerrSwampy:
We were not given a list and yeah it was a experimental value of molar mass, so it could slightly different, I basicly need some idea that is closest to it

Borek:
Can't think of anything else than trial and error building on the ideas I listed - or finding on the web a database of compounds and searching it for compounds with similar molar mass.

Orcio_87:
MgO would give an alkaline solution and its molar mass (40 g) differs from yours (45 g). There are other compounds that fit better - LiCl, Li2S and NaF.

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