How do you find the temperature in a room using a barometer?

Answer 1

Absolutely!
If the room is sealed and makes the volume of air a constant, the pressure and temperature will be directly related per the ideal gas law (as someone else pointed out) PV/nR=T Where P=pressure and V=volume(a constant in this case).

As the temperature in the room increases, the air will want to expand, but since volume is constant, the air will increase in pressure.

Answer 2

There is no reasonable way to do it. As a previous responder noted, barometers measure pressure, not temperature. To try to use a mercury barometer, you would have to standardize the reading at a particular temperature, then put the device in the space in question, wait for things to stabilize, measure the pressure, and do some math using the thermal exxpansion coefficient of mercury. Ugh!

Answer 3

Hi. Enclose the barometer in a closed vessel. Temperature will increase the pressure in the vessel and make the barometer indicate a change. If you know the pressure, Boyle's law will point the way. You will need to know the starting temperature, of course.

Answer 4

Barometers only measure atmospheric pressure.
You need more information than the pressure alone.

It could be freezing in a room or perfectly comfortable and still have the same identical barometric pressure. There is no direct relationship without some other outside factor(s) involved.

You seem to have left out something - or it's a trick question where one has to make assumptions about things not mentioned.

I'm not making extra assumptions without justification, just using the provided information exactly as given and adding nothing to it.

Without taking into account some other factors not indicated, the question cannot be answered as stated.
 

Answer 5

You have to use a mercury barometer. Its possible, but its more of a pain in the a...
The problem is you need to know what your temperature is, or compare your barometric pressure from the mercury barometer and an aneroid barometer.

Read this article from Wikipedia: http://en.wikipedia.org/wiki/Barometer

Answer 6

Put a thermometer on the barometer, then read the thermometer.

As a bonus, you can also read the air pressure with the barometer!

Answer 7

You can't. A barometer measures pressure.

Answer 8

You cannot, a barometer can only measure pressure...

Answer 9

Yes, Boyle's law is the key. The old Pv=nRT formula will do it! Of course it has to be a closed system and you have to know the volume of your room, the number of mols of air... well, you get the picture.