Physics, 06.02.2021 14:00 mandyj5477
A student pours a small amount of ethanol into a beaker. She places the beaker on an electronic
balance to find its mass, and adds a thermometer to measure the temperature of the liquid.
Two hours later, she returns to her experiment. She notices that the mass of the bezker and its
contents has decreased. She can also see that the temperature of the ethanol has decreased.
She guesses that some of the ethanol has evaporated from the beaker.
Describe how evaporation can explain the decrease in mass.
b Describe how evaporation can explain the decrease in temperature.
a
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A student pours a small amount of ethanol into a beaker. She places the beaker on an electronic
bal...
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