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Heat Practice A
1. What is the equation for calculating final temperature when equal
masses of water are mixed? The final temperature when
equal masses of water are mixed is,
MXATemperature.
2. What is the equation for calculating how much heat energy (calories)
transferred to or from a mass of water? The equation for
calculating how much heat energy (calories) transferred
from mass
a
of
3. A student mixed 30 mL of water at 15°C and 30 mL of water at
55°C. Answer the following questions. Show your work.
a. What is the final volume of the water?
b. What is the final temperature of the water?
How many degrees did the cold water increase?
d. How many degrees did the hot water decrease?
e. How much heat energy transferred to the cold water?
f. How much heat energy transferred from the hot water?
g. What happened to the kinetic energy of the hot-water and cold-
water particles?
FOSS Chemical Interactions Course, Second Edition
The Regents of the University of California
Can be duplicated for classroom or workshop use.
12-2
Investigation 5: Energy Transfer
No. 36-Notebook Master
