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ID number:684249
 
Evaluation:
Published: 29.12.2011.
Language: Latvian
Level: Secondary school
Literature: n/a
References: Not used
Extract

Uzdevums
Izpētīt, kāpēc iegūtais maisījums vispirms ir dzeltenzaļā krāsā, tad kļūst ķieģeļsarkanā krāsā.
Darba piederumi, vielas
Mēģene, pipete, svece, statīvs, formalīns (3-5 %), 5% CuSO4 šķīdums, 5% NaOH šķīdums, mēģenes turētājs.

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