adm-in wrote:
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 could any of you make up a question answer being hydrogen,oxygen and nitrogen ...

 The combustion of hydrogen-oxygen mixtures is used to produce very high temperatures (about 2500°C) needed for certain types of welding. Consider the combustion reaction to be that shown below. H2(g) + 1/2 O2(g) ---> H2O(g) change in enthalpy is -241.8kJ How much heat is evolved when a 100.0 g mixture containing 16.0% H2(g), by mass, is burned? ...

 a. hydrogen b.oxygen c.nitrogen ...

 Where can I get basically pure oxygen and hydrogen. Im doing a project for school and I want to test wether mixing hydrogen and oxygen will be an efficient source of water in the future, Just give me some tips to where I could get it or buy it. thx ...

 Both are useful. Oxygen for breathing and for increasing ozone layer. Hydrogen to use as a pollution free fuel. ...

 Molecules of hydrogen escape from Earth, but molecules of oxygen and nitrogen are held to the surface. Why? ...

 I wonder if its possible to create some water out of Hydrogen and Oxygen..? We all know that Hydrogen+Oxygen is the content of water, but is it really possible to make a drop out of it? ...

 I'm making a fuel cell for Science Fair. I was originally calling it a Proton-Exchange Membrane Fuel Cell, but I later found I didn't even have a membrane! I'm using an aqueous electrolyte, not a solid one. So now I don't know what to call my fuel cell, and I'm stuck! A friend who did this project before called it an Alleoline H2/O2 fuel cell. But she also called it an Aqueous Fuel Cell and an Alkaline Hydrogen and Oxygen fuel cell! I'm stuck now. Please help! ...

 What is the maximum useful work which can be obtained from a hydrogen-oxygen fuel cell that produces 1.75 kg of water at 25°C? (Assume 1 atm pressure for the gases.) ...

 specifically under a COLD fusion reaction...or when the Hindenburg blew up (if it was a pure oxygen environment) ...

 creation-s. ...

 and exist as they do on Earth everywhere in the galaxy or do planets that exist outside of our solar system have completely different elements that are unknown to earth? ...

 also write their chemical and physical properties with the laboratory test how their gases are prepared ...

 A-they are gases at room temerature. B-they are the main elements found in natural substances and living things. C-they are the only elements that make up living cells D-they are the main elements that make up both air and water ...

 What is the name for it?? ...

  [del-e-ted] by adm-in
...

  [del-e-ted] by adm-in
...