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What happens when objects are placed into liquid hydrogen?
When objects are placed into liquid hydrogen, they become extremely cold due to the low temperature of liquid hydrogen (-252.87°C). Depending on the material, they may become brittle and susceptible to breaking. Some materials may also experience changes in electrical conductivity or magnetic properties when exposed to such extreme cold.
What happens when hydrogen is combined with oxygen?
When two oxygen and one hydrogen is mixed together, it forms water, or H2O. NASA uses a combination of hydrogen and oxygen in their fuel tanks to ensure lift-off so it produces a large amount of energy in the right proportions as the reaction is very exothermic. If you mix hydrogen gas and oxygen gas they don't react at all unless you heat them.
Why is water considered polar?
Water is considered polar because it has uneven distribution of charge due to the difference in electronegativity between oxygen and hydrogen atoms. This results in a slight negative charge on the oxygen atom and slight positive charge on the hydrogen atoms, making water a polar molecule.
It is to hot for liquid water to exist?
It is too cold for liquid water to exist on the surface
Why has water been included as one of the test materials for reducing sugars starch and protein?
sugars and starch are both made only of carbon, hydrogen and oxygen that is insoluble in cold water or alcohol
How much fuel does rocket takeoff use?
500,000 gallons of cold liquid oxygen and liquid hydrogen
What are the hazards of liquid hydrogen?
Liquid hydrogen is highly flammable and can ignite easily when exposed to air. It is also cryogenic, which means it can cause severe frostbite upon contact with skin. Additionally, hydrogen gas released from liquid hydrogen can displace oxygen in the air, leading to asphyxiation in enclosed spaces.
Which substance is a liquid fuel used in rocket engine?
Traditionally, rockets use cryogenic (super-cold) oxygen and hydrogen.
What is the chemical formula of cold water?
Water is H2O no matter what temperature it is, hot or cold. H2O Cold
What is the storage for liquid fuel?
Volatile explosive fuels such as hydrazine cannot be exposed to oxygen or chemicals containing oxygen, or they may burn or explode. Liquid oxygen and liquid hydrogen have to be kept extremely cold or they will revert to gaseous form with a tremendous pressure. The storage tanks and onboard fuel tanks are highly insulated to keep out heat.
Explain why a water molecule has polar covalent bonds?
Water has a polar covalent bond because the electrons that the hydrogens share with the oxygen hang out around the oxygen more than the hydrogens. This is because the oxygen has more protons in its nucleus than the hydrogen. The hydrogen become positively charged and the oxygen becomes negatively charged. Then also when the molecule becomes cold, loses energy, the hydrogens get closer to each other, but they repel each other, which is why ice is less dense than water. The hydrogen then also forms hydrogen bonds with the other water molecules, attaching to the negatively charged oxygens.
What happens when objects are placed into liquid hydrogen?
When objects are placed into liquid hydrogen, they become extremely cold due to the low temperature of liquid hydrogen (-252.87°C). Depending on the material, they may become brittle and susceptible to breaking. Some materials may also experience changes in electrical conductivity or magnetic properties when exposed to such extreme cold.
Is liquid oxygen safer than gas oxygen?
no liquid oxygen is super cold and u can maybe even die if u touch it
What happens when hydrogen is combined with oxygen?
When two oxygen and one hydrogen is mixed together, it forms water, or H2O. NASA uses a combination of hydrogen and oxygen in their fuel tanks to ensure lift-off so it produces a large amount of energy in the right proportions as the reaction is very exothermic. If you mix hydrogen gas and oxygen gas they don't react at all unless you heat them.
Is a oxygen liquid or gas?
its a gas
Why can't liquid air have liquid water in it?
Liquid air is air (nitrogen, oxygen and other gases) that has been super cooled to change its phase from gas to liquid. At these temperatures, water will be solid. Water turns to ice at 0 degrees C. Nitrogen and oxygen turn to liquid (liquid air) at about -196 degrees C and -183 degrees C, respectively. Water went solid a long time ago when considering how cold these gases are as a liquid.
Why is water considered polar?
Water is considered polar because it has uneven distribution of charge due to the difference in electronegativity between oxygen and hydrogen atoms. This results in a slight negative charge on the oxygen atom and slight positive charge on the hydrogen atoms, making water a polar molecule.
