This cache is a puzzle cache which must be solved using knowledge
of chemistry. The cache is co-maintained by the Student Affiliates
of the American Chemical Society - Tennessee Tech Chapter.
The cache is hidden somewhere on campus.Watch out for
muggles! Please replace the cache EXACTLY as you found it!!
Plenty of nearby parking. Bring your own pen.
The Ideal Gas Law
Many students fail to realize that the Ideal Gas Law is a
composite of several laws observed by various scientists and rolled
into one combined formula. Charles' Law states that there is a
direct relationship between volume and temperature at constant
pressure, or V/T=k. Boyle's law (sometimes referred to as
the Boyle-Mariotte law) is one of several gas laws and a special
case of the ideal gas law. Boyle's law describes the inversely
proportional relationship between the absolute pressure and volume
of a gas, if the temperature is kept constant within a closed
system, or PV=k. Gay-Lussac's second gas law, discovered in
1802, states that the pressure of a fixed mass and fixed volume of
a gas is directly proportional to the gas's temperature, or
P/T=k. And Avogadro showed that equal volumes of ideal or
perfect gases, at the same temperature and pressure, contain the
same number of particles, or molecules. Mathematically, this can be
expressed as V/n=k. The most significant consequence of
Avogadro's law is that the ideal gas constant has the same value
for all gases. This means that the constant R, PV/Tn=R has
the same value for all gases, independent of the size or mass of
the gas molecules.
To find the cache, solve the following gas problems to get the
values needed for the coordinates. Don't forget that temperature
has to be in Kelvin, pressure in atmospheres, volume in liters, and
the ideal gas constant is 0.08206 L Atm/mol K.
The coordinates for the cache are:
N 36° A.BCD W 085° E.FGH
Solve the following problems:
What is the pressure in atm if 2 moles of a gas occupies 5
liters volume at a temperature of 305 K?, A= first two digits of
answer
What is the volume in liters if 4 moles of gas is at 32.8 atm
pressure and a temperature of 500 K?, B= first digit of
answer
How many moles of gas are present if a 15 liter tank at 298 K
has a pressure of 4.9 atm?, C= first digit of answer
What is the temperature in Celcius if one mole of gas at 1 atm
pressure occupies a volume of 22.58 liters?, D= first digit of
answer
What is the temperature in Celcius if 2 moles of gas at 2 atm
pressure occupies a volume of 24.88 liters?, E= first two digits
of answer
What is the pressure in atm if 2 moles of gas at 298 K occupies
a volume of 9.7 liters?, F= first digit of answer
What volume would 5 moles of gas occupy at 340 K and 27.9 atm
pressure?, G= first digit of answer
How many moles of gas are present if 60 liters of gas at 11.85
°C has a pressure of 1185.6 torr?, H= first digit of
answer
You can check your answers for this puzzle on
Geochecker.com.
If first to find, e-mail us a mailing address to receive a FTF
geocoin and some chemistry swag.