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eHow Hobbies, Games & ToysSc ience & Nature Science How to Calculate Densities at Various Temperatures

How to Calculate Density Based onTemperature

How to Calculate Specific Density

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InstructionsFind the Density of Liquids

Subtract the final temperature in degrees Celsius from theinitial temperature in degrees Celsius.For instance, a final temperature of 2 degrees C and aninitial temperature of ! degrees Celsius would yield adifference of"! degrees C ## 2 degrees C $ % degrees C.

&ultiply this temperature difference by the 'olumetrictemperature e(pansion coefficient for the substance beingmeasured, and add one to this number.)f using water, for the e(ample, use its 'olumetrictemperature e(pansion coefficient * . 2 m!+m! degrees C and multiply it by thetemperature difference of the e(ample"% degrees C $ . 2 ( % $ . 2. -dd one to this number to get" % . 2 $ %. 2.

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How to Calculate Densities at VariousHow to Calculate Densities at VariousHow to Calculate Densities at VariousHow to Calculate Densities at VariousTemperaturesTemperaturesTemperaturesTemperatures

To discover how temperature affects the density of a fluidsubstance, use one of two methods depending on the fluidyou wish to measure. For gases, use an adaptation of the Ideal Gas Law, which, when rewritten, gives you theequation for density based on the temperature and pressure. For other fluids such as water or alcohol, youmust use more information to find their densities atvarious temperatures. When you have all of the information required for the calculation,solving it ust ta!es a little math.

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Di'ide the initial density of the fluid by this number to find the final density at the newtemperature. )f the initial density of the water was % 9g+m! then di'ide this by %. 2to find the final density"% +%. 2 $ =.2% $ .%2! 9g+m!

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Some commonly use! /olumetric e0pansion coe11icients inclu!e2

water 2 %3%%%$ (m45m4 oC)

ethyl alcohol 2 %3%%"" (m45m4 oC)

6or the as constant o1 !ry air, use2 $7#3%8 95(: ;!e

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"eferences

=ahi!u!!in2 Air Density

n ineerin Toolbo02 Density Temperature 'ressure

'hoto Cre!it thermometer ima e by Dron 1rom 6otolia3com

The Calculation of Temperaturein 1smotic 3ressure

How to Calculate Carnotngine fficiency /hen the

Temperature )s i'en

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