Question and answer
gas pressure in a closed system is caused by what?
Molecules between the particles of a gas and the walls of the container cause pressure in a closed container of gas.
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Original conversation
User: gas pressure in a closed system is caused by what?

Weegy: Molecules between the particles of a gas and the walls of the container cause pressure in a closed container of gas.
swatz89|Points 15|

User: is temperature a direct measurement of the energy contained in a substance?

Weegy: True. Temperature is actually directly related to energy, so you can measure the energy by doing an equation with the temperature. Have a nice day and please rate well!
Expert answered|dynamickitten|Points 40|

User: do all the molecules of a substance possess the average kinetic energy value

Weegy: False
Expert answered|dynamickitten|Points 40|

User: why does an evaporating liquid cool down, according to the kinetic molecular theory?

Weegy: liquid evaporates after acquiring kinetic energy as heat.As a vapor it leaves the vicinity or source of heat supply contact.Naturally ,since it was the heat energy that made it evaporate, [ [ and it is no longer in contact with this heat ,it is bound to loose kinetic energy, and as such cool down again to become liquid at normal temperature, and even solid as the heat loss continues. ] ]
Expert answered|dynamickitten|Points 40|

User: in an open system, the vapor pressure is equal to the outside air pressure. true or false?

Weegy: True. In an open system, the vapor pressure is equal to the outside air pressure.
Expert answered|dynamickitten|Points 40|

User: How is the state of water determined

Weegy: State of water is determined solely by the conditions of pressure and temperature.
Expert answered|dynamickitten|Points 40|

User: thank you

Weegy: You are welcome and have a very nice day. :3
Expert answered|dynamickitten|Points 40|



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