更新1:
Here are the choices a) 0,2,2 b) 2,2,2 c) 2,1,2 d) 2,0,2
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回答 (3)
2016-11-02 11:07 am
The answer: c) 2, 1, 2
2016-11-02 11:07 am
You don't even need the choices, simply use your brain.
The molecule H₂O has twice the amount of hydrogen than oxygen. Since both hydrogen and oxygen come as gases with 2 atoms each (H₂ and O₂) you'll need twice as many molecules of hydrogen than oxygen.
Therefore the left side will look like:
2 H₂ + O₂
The right side should be fairly easy to figure out. The full equation therefore is:
2 H₂ + O₂ -> 2 H₂O
The molecule H₂O has twice the amount of hydrogen than oxygen. Since both hydrogen and oxygen come as gases with 2 atoms each (H₂ and O₂) you'll need twice as many molecules of hydrogen than oxygen.
Therefore the left side will look like:
2 H₂ + O₂
The right side should be fairly easy to figure out. The full equation therefore is:
2 H₂ + O₂ -> 2 H₂O
2016-11-02 11:12 am
Thanks you guys!
收錄日期: 2021-04-18 15:46:52
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