Thermodynamics Practice Problems - Sarah-anderson.net

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27 Οκτ 2013 (πριν από 3 χρόνια και 11 μήνες)

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Thermodynamics Practice Problem
s


1. How much heat is needed to change 3.00 x 10
2

g of ice at
-
30
.0
ºC to steam at 130.0ºC?















2. A jeweler working with a heated 47 g gold ring must lower the ring’s temperature to make it
safe to handle. If t
he ring is initially at 99

C, what mass of water at 25

C is needed to lower the
ring’s temperature to 38

C?















3. A piece of aluminum house siding is 3.66 m long on a cold winter day (
-
28


C). How much
longer is it on a very hot summer day (39


C)?