Question:

How to solve decomposition problems?

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can you please correct and show me how to do the unanswered and incorrect ones?

1) MgCO3 -->

2) 2HgO --> 2Hg + O2

3) 2PCl5 --> 2P + 5Cl2

4) (NH4)2Cr2O7 --> + + N2

5) 2CuO --> 2Cu + O2

6) Hg2CO3 --> HgO +

7) KNO3 --> + O2

8) H3PO4--> P2O5 +

9) H2SO4 -->

10) Ca(OH)2 --> CaO +

11) H2SO3 -->

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  1. 1) MgCO3 --> Mg  & CO2

    2) 2HgO --> 2Hg + O2  

    3)  instead, ...I'd recommend: PCl5 --> PCl3  + Cl2

    4) (NH4)2Cr2O7(s) → Cr2O3(s) + N2(g) + 4H2O(g)

    5) 2CuO --> 2Cu + O2

    6) Hg2CO3 -> Hg + HgO + CO2

    7) 2KNO3 --> 2 KNO2 + O2

    8) 2 H3PO4--> P2O5 + 3H2O

    9) H2SO4 --> SO3  & H2O

    10) Ca(OH)2 --> CaO +  H2O

    11) H2SO3 --> SO2 & H2O

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