Question1: when I have a moecular compound like "gallium oxide" I would write "GaO4" right?
Question2: if the compound was "calcium sulfate" would I write "Ca(SO4)2" ?
2006-12-11 16:25:22 · 4 answers · asked by Bo 3 in Science & Mathematics ➔ Chemistry
Thanks!
Would Beryllium nitrate be "Be(NO3)2"?
2006-12-11 16:37:19 · update #1
Question 1:
Gallium (I) oxide - GaO
Gallium (II) oxide - Ga2O
Gallium (III) oxide - Ga2O3
All of the above are also known as gallium oxide.
Question 2:
Calcium sulfate - CaSO4
This is because Ca has a 2+ charge, while SO4 has a 2- charge. Thus they both bond in a 1:1 ratio
2006-12-11 17:15:07 · answer #1 · answered by mcflyer 1 · 0⤊ 0⤋
You need to match the charges so:
Gallium has a 3+ charge, and oxygen has a 2- charge so Gallium oxide would be Ga2O3 so the molecule is neutral.
Calcium has a 2+ charge and the polyatomic Sulfate has a 2- charge so Calcium sulfate would be, CaSO4.
2006-12-12 00:33:08 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Except for having the valences screwed up, that's right. Gallium has valence 3, so the oxide would be Ga2O3. Calcium has valence 2, so the sulfate would be CaSO4.
2006-12-12 00:34:07 · answer #3 · answered by Anonymous · 0⤊ 0⤋
1- Yes
2- Yes and No! It depends, if you have "dry" Calcium Sulfate you write CaSO4 but if you have "aqueous" Calcium Sulfate you write
Ca++ and (SO4)-- or Ca+2 and (SO4)-2
2006-12-12 00:35:30 · answer #4 · answered by smarties 6 · 0⤊ 1⤋