Chapter 17: Temperature, Thermal Expansion and the Ideal Gas Law Flashcards
1
Q
What is the conversion of degrees Celsius to degrees Fahrenheit?
A
5℃ = 9℉
2
Q
Ideal Gas Law and breakdown of the variables
A
PV = nRT P = pressure V = volume n = # of moles (mass(grams)/molecular mass (g/mol)) R = universal gas constant, 8.314 J/(mol*K) T = temperature
3
Q
What is STP?
A
Standard temperature and pressure
T = 273.15 K
P = 1.0 atm = 1.013x10^5 N/m^2 = 101.3 Pa.
- choose N/m^2 for doing calculations, then convert P to whatever units later
4
Q
Volume of 1 mole of any ideal gas at STP?
A
22.4 L at STP = 0.0224 m^3
1 L = 1 x10^-3 m^3
5
Q
Internal Stress
A
F/A
F/A = ⍺ * E * ΔT
F = Force A = Are ⍺ = coefficient of linear expansion E = Young's Modulus for the material ΔT = T(final) - T(initial)
6
Q
For ideal gas law formula, if you are given pressure and volume in atm and liters how can you approach the problem?
A
If pressure and volume are given in atmospheres and liters, use the R value equal to 0.0821 Latm / molK