If a gas is known to have a pressure of 200.0 kPa after it has been heated to 65 oC, what was the beginning Celsius temperature of the gas if its pressure was originally 101 kPa?

altitude, density, pressure

air gets less dense the higher the altitude and also the air pressure is less as altitude rises.

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.

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