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nasty-shy [4]
2 years ago
13

Predict the following products balance determine reaction

Chemistry
1 answer:
Nady [450]2 years ago
4 0
1) CuCl2+H2S—>CuS+2HCl
Double replacement

2)ZnCO3—>ZnO+CO2 (already balanced)
Decomposition

3)2Zn+2HCl—>2ZnCl+H2
Single replacement
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Calcium has two unpaired electrons in its Lewis dot structure, while Chlorine has one unpaired electron.

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Chlorine has seven valence electrons, so once it shares electrons with Calcium, the octet rule is accomplished, and no more pairs can be made.

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