Constants | Periodic Table Part A Mercury is often used as an expansion medium i
ID: 1080431 • Letter: C
Question
Constants | Periodic Table Part A Mercury is often used as an expansion medium in a thermometer The mercury sits in a bulb on the bottom of the thermometer and rises up a thin capillary as the temperature rises. Suppose a mercury thermometer contains 3.300 g of mercury How far does the mercury rise in the capillary when the temperature changes from 0.0 °C to 25°C, The density of mercury at these temperatures is 13.596 g/cm3 and 13.534 g/cm3, respectively Express your answer with the appropriate units. y and has a capillary that is 0.180 mm in diameter Ah= 1 Value Units SubmitExplanation / Answer
density = mass / volume
volume = mass / density
V( cold ) = 3.300 / 13.596
V(hot ) = 3.300 / 13.534
change in V = ( 3.300 / 13.534) - ( 3.300 / 13.596)
volume of cylinder = pi r^2 h...... 0.180 mm / 2 = 0.09 mm radius = 0.009 cm
( 3.300 / 13.534) - ( 3.300 / 13.596) = pi (0.009 ^2) h
0.0011 / 0.00025434 = h
h = 4.324 cm
or h = 43.24 mm