Question

what are the uses of alchohol in thermometres
​

Answer 1

Answer:

While the low freezing point is important, I’ve always understood that there are two specific properties about how alcohol expands that make it such an especially good choice to use in thermometers:

• It has a very linear rate of expansion — meaning that it’s going to expand almost exactly the same distance going between 30F - 40F as it is between 200F - 210F. With many other liquids, you’d need to have markings on your thermometer that get wider and wider apart as you move up the scale.

• It has a convenient rate of expansion — meaning that it expands at a rate that works well within the thin tube inside a conventional thermometer. Other liquids with a linear rate of expansion might expand so slowly that the typical temperature range from freezing to boiling would only be an inch high, while others might expand so quickly that a standard thermometer would have to be longer than a yardstick.

Answer 2

Please mark as Brainliest

Answer:

Ethanol-filled thermometers are used in preference to mercury for meteorological measurements of minimum temperatures and can be used down to −70 °C (−94 °F). The physical limitation of the ability of a thermometer to measure low temperature is the freezing point of the liquid used

Please mark as brainliest