Chapter 17: Temperature, Thermal Expansion and the Ideal Gas Law Flashcards

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1
Q

What is the conversion of degrees Celsius to degrees Fahrenheit?

A

5℃ = 9℉

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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
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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

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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

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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)
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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

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