Question

Ba - Ba(OH)2 - Ba(No3)2 - BaSo4 - BaCO3 - CO2 - CaCO3 - H2CO3 - H2O - N2OH - Na2S

Answer 1

Ba+2H20= Ba(OH)2+H2
Ba(OH)2+N2O5=Ba(NO3)2+H2O
Ba(NO3)2+MgSO4=BaSO4+Mg(NO3)2
----
BaCO3=BaO+CO2
CO2+CaO=CaCO3
CaCO3+H2O=H2CO3
H2CO3+NaOH=NaHCO3+H2O
H2O+Na2O=2NaOH
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Где прочерки там не знаю

Answer 2

С предпологаемой опечаткой в конце, получается так.

Answer 3

Chemical Reactions Involving Barium (Ba) and Other Compounds

Ba(OH)2: - Ba(OH)2 + Na2SO4 = BaSO4 + 2 NaOH [[1]](https://elar.urfu.ru/bitstream/10995/40625/1/978-5-7996-1780-6_2016.pdf). - Ba(OH)2 + H2CO3 = BaCO3 + 2H2O [[6]](https://pnu.edu.ru/media/filer_public/2013/04/08/chem_mnogovariant-zad.pdf). - H2SO4 + Ba(OH)2 = BaSO4 + H2O [[8]](https://biblioteka.sibsau.ru/pdf/izdv/izdv_sibgtu/Zhuravlyova_Khimiya_2015.pdf).

Ba(NO3)2: - 2HNO3 + Ba(OH)2 = Ba(NO3)2 + 2H2O [[5]](https://mzz.misis.ru/wp-content/uploads/2015/09/Himiya_3_vyvod.pdf).

BaSO4: - BaSO4 + Na2CO3 = BaCO3 + Na2SO4 [[6]](https://pnu.edu.ru/media/filer_public/2013/04/08/chem_mnogovariant-zad.pdf).

BaCO3: - Ba(HCO3)2 + Ba(OH)2 = 2 BaCO3 + 2 H2O [[2]](https://inmt.urfu.ru/fileadmin/user_upload/site_15053/zaochno/Departament_metallurgii_osn_stranica/KHimija/KHimija._Uchebnoe_posobie..pdf). - Ca(OH)2 + CO2 = CaCO3 + H2O [[3]](https://hti.urfu.ru/fileadmin/user_upload/site_15078/Kafedry/Analitiki/KHimicheskie_i_FKHAM._Sbornik_zadach.pdf). - Ca(OH)2 + CO2 = CaCO3 + H2O [[6]](https://pnu.edu.ru/media/filer_public/2013/04/08/chem_mnogovariant-zad.pdf). - Ca(OH)2 + CO2 = CaCO3 + H2O [[9]](https://fliphtml5.com/fumf/usoo/%D0%A5%D0%B8%D0%BC%D0%B8%D1%8F._10_%D0%BA%D0%BB%D0%B0%D1%81%D1%81/).

CO2: - CO2 + Ca(OH)2 = CaCO3 + H2O [[1]](https://elar.urfu.ru/bitstream/10995/40625/1/978-5-7996-1780-6_2016.pdf). - NaHCO3 + HCl = NaCl + H2CO3 (CO2 + H2O) [[3]](https://hti.urfu.ru/fileadmin/user_upload/site_15078/Kafedry/Analitiki/KHimicheskie_i_FKHAM._Sbornik_zadach.pdf). - Ca(OH)2 + CO2 = CaCO3 + H2O [[6]](https://pnu.edu.ru/media/filer_public/2013/04/08/chem_mnogovariant-zad.pdf). - Ca(OH)2 + CO2 = CaCO3 + H2O [[9]](https://fliphtml5.com/fumf/usoo/%D0%A5%D0%B8%D0%BC%D0%B8%D1%8F._10_%D0%BA%D0%BB%D0%B0%D1%81%D1%81/).

H2CO3: - Ba(OH)2 + H2CO3 = BaCO3 + 2H2O [[6]](https://pnu.edu.ru/media/filer_public/2013/04/08/chem_mnogovariant-zad.pdf). - NaHCO3 + HCl = NaCl + H2CO3 (CO2 + H2O) [[3]](https://hti.urfu.ru/fileadmin/user_upload/site_15078/Kafedry/Analitiki/KHimicheskie_i_FKHAM._Sbornik_zadach.pdf).

H2O: - Ba(HCO3)2 + Ba(OH)2 = 2 BaCO3 + 2 H2O [[2]](https://inmt.urfu.ru/fileadmin/user_upload/site_15053/zaochno/Departament_metallurgii_osn_stranica/KHimija/KHimija._Uchebnoe_posobie..pdf). - Ba(OH)2 + H2CO3 = BaCO3 + 2H2O [[6]](https://pnu.edu.ru/media/filer_public/2013/04/08/chem_mnogovariant-zad.pdf).

N2OH: - No specific chemical reaction found for N2OH in the provided search results.

Na2S: - No specific chemical reaction found for Na2S in the provided search results.

I hope this information helps! If you have further questions or need clarification on any of these chemical reactions, feel free to ask.