Guide to Propulsion
Charles and Gay-Lussac's Law
- Volume is directly
proportional to the temperature means......
Student should recognize that if either
V or T increases, the other will also, and vice versa.
- If T = 1000 K,
and V = 10 cu. m., what does C equal?
C = .01
- Using that value
for C, find:
a. V, when T = 1,1000 K
b. V, when T = 1200 K
c. V, when T = 800 K
d. V, when T = 1,400 K
a) V = 11 cu. meters
b) V = 12 cu. meters
c) V = 8 cu. meters
d) V = 14 cu. meters
- Plot these points
on a graph, or use a graphing calculator. Describe the graph.
The graph should have a positive slope.
Student should also describe how he/she has labeled the axes.
- Open the animated
version of Charles and Gay-Lussac's Law slide. How does your graph
compare to the graph shown here?
The graphs should both have positive slopes.
Steepness will depend on scale.
- Use your graph
a. V, when T = 2,000 K
b. V, when T = 600 K
c. T, when V = 15 cu. m.
d. T, when V = 3 cu. m.
a) V should be about 20 cu. meters
c) T should be about 1500 K
b) V should be about 6 cu. meters
d) T should be about 300 K
- Now check your
answers for problems 3 and 6 by using the ratio V/T = C. Were they
Answers should be very close, as this
is just a different version of V = CT.
- Take a look at
your answer to question 1. Does your graph agree with that answer?
Why or why not?
Answers will be different for each student.