Advantages of mercury over alcohol as a thermometric liquid

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Asked 11/6/2013 3:50:38 PM

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User: Advantages of mercury over alcohol as a thermometric liquid

Weegy: The Advantages of a Mercury Thermometer: Durability When it comes to thermometers, like most things, you get what you pay for. Alcohol (also called spirit-filled) thermometers are inexpensive but they also break very easily. [ The thread of the thermometer is quite fragile, and when it breaks it is nearly impossible to rejoin. Mercury thermometers tend to be much more durable under duress. Accuracy Because of sensitivity of temperature, high thermal conductivity, low thermal capacity, good visibility and non-wetting of the internal capillary walls of the thermometer, mercury is typically a very accurate gauge of temperature. Alcohol thermometers, on the other hand, tend to have a lower conductivity while wetting the walls of the device. This can make the thermometer show the results more slowly and less accurately. Some believe that non-mercury thermometers should not be used in secondary schools because of this inaccuracy. Temperature Range Mercury has been used in thermometers for many years due to its wide temperature range. Mercury functions in the range of 234 Kelvin to 630 Kelvin, which cannot be matched by alcohol thermometers. Despite this wide range, the amount that mercury expands is eight times less than alcohol, which allows mercury thermometers to be made smaller and more compact than alcohol thermometers. Mercury's high boiling point allows it to be used in thermometers that are in steaming hot liquids and other cooking foods. Read more: ]
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