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iVinArrow [24]
3 years ago
15

Basic Chem:

Chemistry
1 answer:
Agata [3.3K]3 years ago
5 0
1. 2Fes2 + 5.5O2. Fe2O3 + 4SO2

2. is already balanced

3. 2k + Br2. KBr

4. SiO2 + 4HF. SiF4 + 2H2O

hope that helps
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