Here is
a link to the data sheet.
Actual numbers and a discussion of correct precision and significant figures
foR this lab, with general APPlIcationS, will be posted soon. 
ObjectiveTo measure pressure as a function of temperature and to extrapolate
to absolute zero. referenceCh. 13. See section 136.
See the GayLussac’s Law, page 363,
which assumes volume V is constant. See figure 1313 (a), but assume the
vertical axis is pressure P instead and that the volume is constant. In other
words, assume the straight line is a graph of P vs T. Check out the T intercept ! Equipment: Pressure gauge Long
and short rod 2 Thermometers Rod
clamps Electric range 
Procedure:
thermometer, measure the temperature of the
room. Turn on the electric range to high. Observe the rise in the
temperature of the water. When the temperatures
reaches room temperature, record T_{1} and P_{1}. In the
pressure measurement, your error in a single closely
at the gauge to record the least count. Thus
you must subtract or add the magnitude
of the difference between the room temperature reading T_{1} ands reading and atmospheric pressure P_{ATM}, in PSI (pounds
per square inch.) . If the initial reading is
above P_{ATM} , then you must
subtract; if the initial reading is below P_{ATM }, you must add. measurement of 0.3 psi.


9. FInally, can you think of a way to get better agreement between the hand computation and excel ? Is there a better choice for t1 and P1 that is not necessarily a data point? Check back soon for a hint to the answer! 
Questions (4 points
each.) Short answers. 2. What is the
lowest achieved temperature in Kelvin ? The answer is not zero. Please site
your internet reference and explain in a paragraph how the lowest achieved
temperature was achieved, using known concepts from our studies to date. 3. Compute the product of the numerical answer to the last
question and the temperature of the interior of the sun? (i.e. What answer do
you get when you multiply them together?) Please site sources for additional data
used. 4. You have a sample
of H_{2}Ohat happens at the triple point of water in terms of the
first three phases of matter, solid, liquid and gas ? If you increase the pressure from the pressure
value of the triple point, which phase increases its presence in the H_{2}O
sample, solid, liquid or gas? 5. What is the
approximate value of the triple point temperature in ^{0}C to the
nearest hundredth place? 6. What is the
letter of the correct answer? The temperature of 1 cup of water is 25 ^{0}C. The temperature of 30 gallons of water is 25 ^{0}C.
The average kinetic energy of the molecules in the cup is 

