Question

1. CaCO, CaO+CO, 2. Al+S—AIS 3. P+O2P20 4. HgO–Hg+O2 5. N2+H2NH3

Answer 1

CACO3=t° CAO+CO2

2AL+3S=t° AL2S3

4P+5O2=2P2O5

2HGO=2HG+O2

N2+3H2=2NH3(обратимая р-ция)

Answer 2

It seems like you've provided a list of chemical reactions. I'll help you balance these chemical equations:

1. CaCO3 → CaO + CO2 (Balanced)
2. Al + S → Al2S3 (Balanced)
3. P4 + 5O2 → P4O10 (Balanced)
4. HgO → Hg + O2 (Balanced)
5. N2 + 3H2 → 2NH3 (Balanced)

These are the balanced chemical equations for the reactions you've listed. If you have any more questions or need further assistance, feel free to ask!