Question

Na > NaOH > Cu(OH)2 > CuO > Cu Al > Al2O3 > AlCl3 > Al2O3 > Al

Answer 1

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Answer 2

The given sequence appears to be a comparison of various chemical compounds, specifically involving sodium (Na), sodium hydroxide (NaOH), copper(II) hydroxide (Cu(OH)2), copper(II) oxide (CuO), aluminum (Al), aluminum oxide (Al2O3), and aluminum chloride (AlCl3).

The sequence can be interpreted as a ranking based on some criteria, such as their chemical reactivity or solubility. If we're looking at reactivity or solubility in water, the sequence suggests that:

1. Sodium (Na) is the most reactive or soluble in water among the listed substances.
2. Sodium hydroxide (NaOH) is less reactive or soluble than sodium (Na).
3. Copper(II) hydroxide (Cu(OH)2) is less reactive or soluble than sodium hydroxide (NaOH).
4. Copper(II) oxide (CuO) is less reactive or soluble than copper(II) hydroxide (Cu(OH)2).
5. Aluminum (Al) is more reactive or soluble than copper(II) oxide (CuO).
6. Aluminum oxide (Al2O3) is less reactive or soluble than aluminum (Al).
7. Aluminum chloride (AlCl3) is less reactive or soluble than aluminum oxide (Al2O3).
8. Aluminum oxide (Al2O3) is less reactive or soluble than aluminum (Al).

This sequence represents a general trend in the reactivity or solubility of these compounds in water, with more reactive or soluble substances being listed before less reactive or soluble ones.