The octane rating of a substance is a measure of its resistance to autocombustion when compressed. By definition, isooctane has an octane rating of 100, and n-heptane a rating of 0, and all others are in comparison to these two.
There are various ways to measure the octane rating of a substance. On way is determined by running the fuel through a specific test engine with a variable compression ratio under controlled conditions, and comparing these results with those for mixtures of isooctane and n-heptane.
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Relative humidity is the ratio of the partial pressure of water vapour to the saturation vapour pressure of water at the same temperature. Relative humidity depends on temperature and the pressure. Very roughly speaking, it is a ratio of the amount of water vapour in the air compared to the total amount of water vapour that it possible for that air to contain.
The state of vapour is gaseous.
The molecular mass of water vapour is 18.01528
If you look carefully at a boiling kettle, water vapour is the white vapour you can see. Steam is actually the invisible short section between the spout of the kettle and the start of the water vapour.
the difference is that water vapour is just one particle that joins together with more and more to form steam
yes
Yes at low enough pressures
Use the Equation of State (EOS) in combination with the Antoine's Equation to determine vapor pressure.
Relative humidity (RH) is the ratio of the partial pressure of water vapour to the saturation vapour pressure of water at the same temperature. Relative humidity depends on temperature and the pressure. Very roughly speaking, it is a ratio of the amount of water vapour in the air compared to the total amount of water vapour that it possible for that air to contain.
Relative humidity is the ratio of the partial pressure of water vapour to the saturation vapour pressure of water at the same temperature. Relative humidity depends on temperature and the pressure. Very roughly speaking, it is a ratio of the amount of water vapour in the air compared to the total amount of water vapour that it possible for that air to contain.
The state of vapour is gaseous.
No. Vapour does not smell.
White smoke is water vapour. Possible head gasket problems
no
Any vapour is compressible.
Whi many are, many are not (iodine vapour is quite easily seen, for example, where water vapour is not).
The water vapour condensed on the windows. The vapour rising off the acid made me choke.