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In UV-light oxygen is given off as follows:
2 KMnO4 --> K2MnO4 + MnO2+O2If you heat up potassium permangenate extremely, oxygen is given off according to:
4KMnO4 --> 2K2O + 4MnO2 + 3O2
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∙ 12y ago
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∙ 15y agoProduction of O2 H2O2 (aq) ------------> 2H2O (l) + O2 (g) Hydrogen Peroxide Solution ---------------> Water + Oxygen gas ----
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∙ 12y agothe products would be the metal oxide.
Ex: Na + O2 = NaO
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∙ 8y agoFor example a combustion reaction.
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∙ 12y agoMany do. one is photosynthesis
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∙ 13y agoI think trees...... akward.....
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∙ 14y agodecomposition of H2O2
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∙ 14y agoPhotosynthesis in green plants.
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Why does wood burn or combust?
When heated, wood gives off gasses. Those gasses combine with oxygen in the air, producing a chemical reaction that gives off heat. Rapid oxidation of a fuel is called combustion, or fire.
What is the definition of 'exothermic'?
A chemical reaction that gives off heat ... like burning a candle.
Is the chemical reaction for the combustion of magnesium endothermic or exothermic?
Exothermic (gives off heat - and light!).
What is the chemical reaction when you burn a candle?
When a candle burns the reactions that occur are both chemical and physical. Chemical reaction is when substances are mixed together to create a different material. A physical reaction is when there is a change in the appearance of the substance. For example when water turns to ice, and when chocolate melts. The chemical reaction that happens when a candle burns is when the oxygen combines with the paraffin. When this happens, this makes carbon dioxide, water and other materials. When the wax reacts with the oxygen it gives off light and heat. The more oxygen that reacts with the candle when it burns, the brighter and hotter it is. The physical reaction that occurs is when the candle wax melts. When the energy (light and heat) inside of the candle is released it helps to melt the candle.
When you mix yeast and hydrogen peroxide does the mixture get warmer?
Yes, the mixture does get warmer! It is called an exothermic chemical reaction, which just means it gives off heat. It is the opposite of an endothermic reaction, which means it absorbs heat. The reaction between hydrogen peroxide(C2H2) and yeast produces oxygen. Hope this answers your question!
During photosynthesis what chemical reaction gives off heat?
Exothermic Reaction.
What is a chemical reaction gives off heat called?
exothermic reactions-gives off heat
Why does wood burn or combust?
When heated, wood gives off gasses. Those gasses combine with oxygen in the air, producing a chemical reaction that gives off heat. Rapid oxidation of a fuel is called combustion, or fire.
This process uses oxygen and gives off carbon dioxide?
A Combustion Reaction.
A chemical reaction that gives off heat is most likely to be what?
An endothermic reaction is one that consumes heat.
What name is given for a chemical reaction that gives off gas?
Effervescent, I believe.
What gives off oxygen in reaction of photosynthesis?
The presence of sunlight, carbon dioxide and chlorophyl gives up oxygen to air during the photosynthesis.
What is the definition of 'exothermic'?
A chemical reaction that gives off heat ... like burning a candle.
How do you determine whether a gas given off during a chemical reaction is oxygen or hydrogen?
Smell
What causes ignition when water reacts with potassium?
The reaction of potassium with water is highly exothermic. That is, it gives off a lot of heat. Hydrogen, which is formed by the chemical reaction is ignited by this heat and so explodes.
Is the chemical reaction for the combustion of magnesium endothermic or exothermic?
Exothermic (gives off heat - and light!).
Do catalysts affect temperature?
A catalyst affects the speed of a chemical reaction. If the chemical reaction gives off heat, the reaction may affect the temperature, but the catalyst by itself doesn't affect the temperature.
