氧化銅重ｄ定係普通銅重ｄ？ｗｈｙ？？？？
2006-10-31 16:54:14 · 4 個解答 · 發問者 ? 2 in 科學 ➔ 化學
氧化銅(II)重ｄ定係普通銅重ｄ? 你要點比?
比重量: 1kg 氧化銅(II) vs 1kg 銅 → 一樣重
比molar mass: 1mol 氧化銅(II) (m.m.=79.5) vs 1mol 銅 (m.m.=63.5) → 1mol氧化銅
比密度: 1cm^3 氧化銅(II) (=6.31g) vs 1cm^3銅 (=8.96g) → 銅密度高d
2006-10-31 17:34:44 · answer #1 · answered by 己式庚辛 7 · 0⤊ 0⤋
普通銅重d
2006-11-01 10:42:08 · answer #2 · answered by SSL 3 · 0⤊ 0⤋
Of course 氧化銅.
2Cu(s) + O2 (g) → 2CuO (s)
- one atom in 普通銅 only consists of 1 copper atoms, but one unit in 氧化銅 consists of 1copper atom PLUS one oxygen atom.
If we calculate the formula mass of the two substance, we can already see that
copper (II) oxide is heavier than copper
這樣當然是氧化銅重d la.
2006-10-31 17:28:01 · answer #3 · answered by Sau Ying 1 · 0⤊ 0⤋
真正既答案就唔太清楚
但我估係普通銅
因為銅氧化後會有氧化物脫落
所以應該會易左重量
希望可以比到d意見你^^
2006-10-31 22:07:16 補充：
打錯字係少左d重量
2006-10-31 17:06:37 · answer #4 · answered by Anonymous · 0⤊ 0⤋