4253833
Beschreibung
Quiz von Joanna van Dyk, aktualisiert more than 1 year ago
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Erstellt von Joanna van Dyk
vor mehr als 8 Jahre
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Frage 1
Frage
Oxygen can be produced by the decomposition of hydrogen peroxide (H2O2).
What is the equation for this reaction?
Antworten
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2H2O2 = O2 +2H2O
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H2O2 = 2O + H2
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2H2O2 + CO2 = HCO3 + H2 + H2O
Frage 2
Frage
Oxygen can be produced by the decomposition of hydrogen peroxide (H2O2).
What is a suitable catalyst for this reaction?
Antworten
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Manganese oxide
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Phosphorus
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Sulphur Dioxide
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Lead Nitrate
Frage 3
Frage
Oxygen can be produced by the decomposition of hydrogen peroxide (H2O2).
What is the percentage of oxygen in air at atmospheric pressure
Antworten
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21%
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78%
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0.04%
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1%
Frage 4
Frage
Other elements can combust in oxygen.
Write a balanced equation for the combustion of sulphur.
Antworten
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S + O2 = SO2
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S + O2 = SO4
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S + O2 = SO + H2O
Frage 5
Frage
SO2 dissolves in rainwater to form an acidic solution.
Antworten
- True
- False
Frage 6
Frage
Write a balanced equation for the combustion of hydrogen:
[blank_start]2[blank_end]H2 + O2 = 2[blank_start]H2O[blank_end]
Antworten
-
2
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H2O
Frage 7
Frage
Select two uses for carbon dioxide:
Antworten
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fizzy drinks
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fire extinguishers
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sterilization
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laughing gas
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