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What evidence leads you to think that reactions in stars are very different from reactions like hydrogen combustion?
Wiki User
∙ 8y ago
With the rate at which stars emit energy, any chemical process would exhaust a stellar mass of reactants in a relatively short time, yet stars last millions to billions of years. The only conclusion is that stars are powered by something many times more energetic than any chemical process.
Wiki User
∙ 8y ago
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Why is 2 Mg O2 equals 2 MgO is not a combustion reaction?
Because combustion reactions only occur with Carbon, Hydrogen, and Oxygen.
Which type if of chemical reaction takes place when hydrogen peroxide is heated and separates into hydrogen and oxygen?
combustion
How are the elements that make up water different from water itself?
Water is different from hydrogen and oxygen in the same way that wood ash is different from wood and oxygen. Both water and wood ash are the products of combustion.
What order should atoms be balanced in a hydrocarbon combustion reaction?
Answer this question… Carbon, hydrogen, oxygen
Which kind of chemical reaction has compounds that split apart to from smaller compounds?
Decomposition reactions involve a compound breaking down into two or more smaller compounds. This is usually caused by the introduction of some form of energy such as light which breaks bonds between atoms. However, combustion reactions can also involve compounds splitting into simpler ones. A combustion reaction involves a compound made up of carbon, hydrogen, and occasionally oxygen atoms reacting with oxygen gas, O2, to form water and carbon dioxide. However, the answer to your question is probably decomposition reactions.
What is difference between hydrogen combustion and compressed natural gas combustion?
All types of combustions are oxidation reactions.
Why is 2 Mg O2 equals 2 MgO is not a combustion reaction?
Because combustion reactions only occur with Carbon, Hydrogen, and Oxygen.
What types of chemical reactions may result in the formation of water?
The most common example of such a reaction would be the combustion of hydrogen gas: 2H2 + O2 --> 2H2O Water is also produced in the combustion of hydrogen compounds (e.g. CH4, H2S), many acid-base reactions, and the decomposition of hydrogen peroxide.
Are glow sticks an example of a combustion reaction?
No, a combustion reaction is where a chemical reacts with oxygen to produce an oxide and lots of heat. Glow sticks use a a kind of reaction chemiluminescence. The reactions often involve oxygen particularly hydrogen peroxide, but they are not combustion reactions and typically produce little to no heat
Can a combustion reaction produce hydrogen?
No. If anything, a combustion reaction will consume hydrogen.
What chemical reaction occurs when oxygen gas is combined with hydrogen gas?
Two reactions are possible 2H2 + O2 -> 2H2O - complete combustion to form water H2 +O2 -> H2O2 -incomplete combustion to form hydrogen peroxide
How is it possible then for water which is composed of hydrogen and to put out fires?
The bonds between the hydrogen and oxygen is too strong to be destroyed by combustion. Add: The chemical properties of water are different from the properties of hydrogen and water separately. Therefore, water does not support combustion as oxygen does, and water does not explode as hydrogen does.
Can hydrogen support combustion?
Hydrogen is a fuel for combustion, but cannot support it in the manner than oxygen can.
Are the reactions of ordinary molecular hydrogen slow or rapid?
Hydrogen reacts at different speeds with different substances, and the speed of any reaction depends on the conditions.
Why only oxygen supports combustion and not hydrogen or nitrogen?
Hydrogen is not electronegative enough to act as a strong oxidizing agent, and the triple bond in the N2 molecule is difficult to break, making the gas largely inert. However, the halogens, particularly fluorine and chlorine can support redox reactions similar to combustion.
How is water different from the elements which made them?
Hydrogen gas and oxygen gas are gases at room temperature. Oxygen supports combustion and hydrogen is very combustible. Water is a liquid at room temperature and is not combustible and does not support combustion.
Which atom should be balanced last when balancing hydrocarbon combustuion reactions?
Oxygen is often the "problem child" of balancing, so do oxygen last. In combustion reactions, it's usually easiest to do carbon first, then hydrogen, then oxygen.
