A: 5
B: 6
C: 2
D: 3
How many atoms of oxygen (O) are in one formula unit of Mg(NO3)2?
2016-05-09 11:36 pm
回答 (3)
2016-05-09 11:44 pm
In each formula unit of Mg(NO₃)₂, there are 1 Mg²⁺ ion and 2 NO₃⁻ ions.
In each NO₃⁻ ion, there are 3 O atoms.
No. of O atoms in one formula unit of Mg(NO₃)₂ = 2 × 3 = 6
...... The answer is B: 6
In each NO₃⁻ ion, there are 3 O atoms.
No. of O atoms in one formula unit of Mg(NO₃)₂ = 2 × 3 = 6
...... The answer is B: 6
2016-05-09 11:40 pm
6, Can't you multiply?
2016-05-09 11:38 pm
6. can't you count?
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