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What are the 3 elements that must be present in coal?
The three elements that must be present in coal are carbon, hydrogen, and oxygen. These elements make up the organic matter that was transformed and preserved through the process of coalification.
What two elements must a silicate have?
Silicon and oxygen are the two elements that must be present in a silicate mineral. Silicates are the most common minerals on Earth and are characterized by a silicate tetrahedron structure, where one silicon atom is surrounded by four oxygen atoms.
Can oxygen in a tank combust?
No. Oxygen itself is not flammable. Rather, it supports the combustion of flammable materials. Oxygen tanks do, however present a fire hazard. Normal air is 21% oxygen, while oxygen tanks carry 100% oxygen. A higher concentration of oxygen makes it easier to ignite flammable materials and allows a fire to burn hotter.
What has to happen for a gas or vapor to be flammable or an explosion hazard?
For a gas or vapor to be flammable or an explosion hazard it must have a concentration in air between the Lower Explosive Limit (LEL) and the Upper Explosive Limit (UEL) for that particular gas or vapor.
What element must be present for a molecule to be considered an organic molecule?
Carbon must be present in a molecule for it to be considered an organic molecule. Organic compounds are typically composed of carbon atoms bonded to hydrogen, oxygen, nitrogen, sulfur, and other elements.
What two element must present in a silicate?
The two elements that must be present in a silicate are silicon and oxygen.
What two elements must be present in all silicate minerals samples?
Oxygen and silicon.
The four most important elements that must be present in cell?
Carbon, Hydrogen, Oxygen and Nitrogen.
What are the 3 elements that must be present in coal?
The three elements that must be present in coal are carbon, hydrogen, and oxygen. These elements make up the organic matter that was transformed and preserved through the process of coalification.
What must be present for combustion to occur?
For combustion to occur, three elements must be present: fuel, oxygen, and heat. Fuel provides the energy source for combustion, oxygen is required to sustain the chemical reaction, and heat is needed to initiate the combustion process. Without any of these elements, combustion cannot take place.
What two elements must a silicate have?
Silicon and oxygen are the two elements that must be present in a silicate mineral. Silicates are the most common minerals on Earth and are characterized by a silicate tetrahedron structure, where one silicon atom is surrounded by four oxygen atoms.
Which two substances must be present for an iron object to rust?
For the oxidation of iron to occur, that is for ferric oxide to form, there must be oxygen present. There must also be water present.
Can oxygen in a tank combust?
No. Oxygen itself is not flammable. Rather, it supports the combustion of flammable materials. Oxygen tanks do, however present a fire hazard. Normal air is 21% oxygen, while oxygen tanks carry 100% oxygen. A higher concentration of oxygen makes it easier to ignite flammable materials and allows a fire to burn hotter.
What has to happen for a gas or vapor to be flammable or an explosion hazard?
For a gas or vapor to be flammable or an explosion hazard it must have a concentration in air between the Lower Explosive Limit (LEL) and the Upper Explosive Limit (UEL) for that particular gas or vapor.
What element must be present for a molecule to be considered an organic molecule?
Carbon must be present in a molecule for it to be considered an organic molecule. Organic compounds are typically composed of carbon atoms bonded to hydrogen, oxygen, nitrogen, sulfur, and other elements.
What reactant must be present to support combustion?
Oxygen.
What gas must be present for a combustion reaction to occur?
Oxygen gas must be present for a combustion reaction to occur.
