chem(very easy)

2007-06-22 4:44 am
the gas removed when air is passed over heated copper.

回答 (3)

2007-06-22 6:52 pm
✔ 最佳答案
Do you mean pass copper to concentrated nitric acid or concentrated sulphuric acid?

If copper pass to concentrated nitric acid. Then heat it NO2 will give off.

If copper pass to concentrated sulphuric acid. Then heat it SO2 will give off.
參考: me
2007-06-23 8:19 pm
oxygen + copper ---> copper(II) oxide
(heat)
2007-06-22 6:30 am
hydrogen.....maybe
you have model ans, right?


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