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yuliashka2907
@yuliashka2907
October 2021
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Помогитее с химиееей срочноо!!!!!!!!
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Tizifona
Verified answer
Билет номер 3.
1 задание:
2Fe(OH)3 -(t)-> Fe2O3 + 3H2O
Fe2O3 + 6HCl --> 2FeCl3 + 3H2O
2 задание:
H2O + SO3 --> H2SO4
Ba(OH)2 + CaO --> реакция не идет
2NaOH + CO2 --> Na2CO3 + H2O
3 задание:
W(%) = m(вещества)/m(раствора) × 100%
W(%) = 10г/60г × 100% = 16,7%
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Answers & Comments
Verified answer
Билет номер 3.1 задание:
2Fe(OH)3 -(t)-> Fe2O3 + 3H2O
Fe2O3 + 6HCl --> 2FeCl3 + 3H2O
2 задание:
H2O + SO3 --> H2SO4
Ba(OH)2 + CaO --> реакция не идет
2NaOH + CO2 --> Na2CO3 + H2O
3 задание:
W(%) = m(вещества)/m(раствора) × 100%
W(%) = 10г/60г × 100% = 16,7%