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28.7 x 43.4 cm ⏐ 11.3 x 17.1 in (300dpi)
GIPHOTOSTOCK / SCIENCE PHOTO LIBRARY GIPHOTOSTOCK / SCIENCE PHOTO LIBRARY
Nickel carbonate precipitate. Sodium carbonate was added to a test tube containing nickel sulfate. Both solutions were 0.5 M concentration. Nickel carbonate precipitate has been formed as a result: NiSO4 + Na2CO3 -> Na2SO4 + NiCO3. This is an example of a double displacement reaction.
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