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Iron and magnesium burn in air under the right circumstances becasue they combine rapidly with oxygen. (Fire is just the rapid combination of oxygen or another oxidizer, wiht a fuel.)
Oxygen is only about 20% of air. If you provide pure, 100%, oxygen under the same circumstances, there is more oxygen to combine with the iron or magnesium, so they can burn faster.
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Does oxygen make things burn brighter?
Oxygen is what makes things burn at all. The more oxygen there is, the brighter it can burn.
Why does rust weigh more than original powdered iron?
When iron (Fe) rusts, it combines with oxygen (O2) to form various forms of iron oxide such as Fe2O3, Fe3O4, or FeO2. In each of these there are oxygen molecules bonded to the iron. The oxygen comes from the air, water or other solution. So an object which was formally pure iron, once rusted, will contain additional mass from the oxygen and weigh more than it did before.
Why does burnt iron weigh more than unburnt iron?
Because of the pressure that is on the the hot iron the cold iron doesn't have as much force as the hot one so that's why!
Why does the rusty nail weigh more than the original nail?
rust is iron oxide. so what's happening at the atomic level is oxygen is bonding to the iron. The iron stays with oxygen attached, the oxygen is the increased weight.
What is the word equation for making iron in a blast furnace?
Overall Fe2O3 + 3CO → 2Fe + 3CO2 In words, iron oxide reacts with carbon monoxide to produce iron and carbon dioxide. However it starts with 2 C + O2 → 2 CO. Carbon reacts with oxygen to produce carbon monoxide. Then 3 Fe2O3+ CO → 2 Fe3O4+ CO2 the carbon monoxide reduces the iron. Then the reaction continues to reduce more iron Fe3O4 + CO → 3 FeO + CO2 Eventually the iron is reduced to pure iron by more carbon monoxide as the temperature increases FeO+ CO → Fe + CO2 There are other side reactions.
At what temperature does metal burn?
To burn iron, the temperature needs to be more than 1200 degrees Celsius. The metal must be white hot and surrounded by pure oxygen to burn up.
Does oxygen make things burn brighter?
Oxygen is what makes things burn at all. The more oxygen there is, the brighter it can burn.
Why does magnesium burn more in oxygen that in air?
First off, it doesn't burn more, it burns quicker. This is because It's reacting with the oxygen, and in a 100% oxygen environment there's simply more oxygen to react with (the air is 21% oxygen).
Which bonds with oxygen more iron or lead?
Iron. Think of rust.
Why does sulfur burn more rapidly in oxygen than in air?
Well, oxygen supports burning. Fire needs fuel, oxygen and a spark or another source of ignition. So the more oxygen there is, the faster your substance will burn! There is 21% oxygen in air, and when you have an atmosphere of oxygen, it can go to quite high concentrations. So sulphur will burn in an atmosphere which has a higher oxygen content.
Why does rust weigh more than original powdered iron?
When iron (Fe) rusts, it combines with oxygen (O2) to form various forms of iron oxide such as Fe2O3, Fe3O4, or FeO2. In each of these there are oxygen molecules bonded to the iron. The oxygen comes from the air, water or other solution. So an object which was formally pure iron, once rusted, will contain additional mass from the oxygen and weigh more than it did before.
How does oxygen distribute fire?
Oxygen does not distribute fire. Fire is a chemical reaction between oxygen and some flammable substance. Fire cannot burn without oxygen, and the more oxygen there is, the hotter and faster a fire will burn. More oxygen also makes it easier for materials to ignite.
Why is magnisium sulphate a compound?
It is a compound because it has two or more elements (in this case 3) chemically bonded together in a fixed ratio and structure. It is composed of the elements magnesium, sulfur, and oxygen.
What makes gasoline burn more efficiently?
Oxygen and heat.
Why does iron weigh more after it rusts?
because the iron bonds with oxygen, so the weight becomes the original weight of iron plus the original weight of Oxygen.
Why does burnt iron weigh more than unburnt iron?
Because of the pressure that is on the the hot iron the cold iron doesn't have as much force as the hot one so that's why!
Why is it better to burn fuels in a good supply of oxygen?
If you have a good supply of oxygen you get a more complete burn, which means you get more energy out of the fuel and there are fewer products of incomplete combustion, which are often toxic
