0.1 mole of aluminium oxide contains
1)0.2 mole of cations
2)0.3 mole of cations
3)0.2 mole of anions
4)0.5 mole of particles
A)1,3
B)1,4
C)2,4
D)1,2,4
One mole of oxygen contains y atoms,how many atoms are there in one mole of water?
A)y/2
B)2y/3
C)3y/2
D)2y
answers with explanation
chemistry
2006-12-28 7:07 am
回答 (1)
2006-12-28 7:17 am
✔ 最佳答案
Al2O3Al係cation
O係anion
比例係2比3
o係0.1 mole入面就有0.2mole Al, 0.3mole O
即係0.2mole cation, 0.3 mole anion
共有0.5mole particle
答案係 B)1,4
2006-12-27 23:21:13 補充：
Oxygen係以O2呢個form exsist既,即係話Y係2啦當水,H2O有3個PARTICLE, 即係3Y/2即係C喇
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