NAME: ________________________

# ← ENGG 201, MidtermTest

### Question Limit

of 38 available terms

### 5 Matching Questions

1. κ = μ(Cv/M)
2. Dalton's Law
3. Cmp < C < √(C²)
4. λ = (kT) / (∏σ²P√2)
5. ρn
1. a Total pressure in a vessel equals sum of pressures that the gases exert in other vessels.
2. b Mean Free Path (λ) - Average distance molecule travels between two successive collisions

σ - collision diameter
k - Boltzmann Constant (1.3805x10⁻²³ J/K or (kg.m²/s²)/K
3. c Thermal conductivity

κ - Proportionality constant for thermal conductivity
Cv - Molar heat capacity
μ - Viscosity
4. d Always check: Most probably velocity < Mean Velocity < Root Mean Square Velocity
5. e Number Density - Molecules/unit volume

ρn = Na/Vm

ρn = P/(KT)

### 5 Multiple Choice Questions

1. Mean Free Path (λ) - Average distance molecule travels between two successive collisions

μ - Viscosity
2. At constant T and P total volume of a gas is equal to volume of each component of the gas.
3. Amount of molecules/unit area/unit time

molecules/m² s
4. Mean Free Path (λ) - Average distance molecule travels between two successive collisions

ρn - Number Density
σ - Collision Diameter
5. Most probable velocity (speed)

### 5 True/False Questions

1. Thermal ConductivityP - Pressure
Vm - Molar Volume (v/n)
R - Universal Gas Constant (8.314 J/molK)
T - Temperature

2. Diameter of a Molecule (1Å)M/Na

M - molar mass

3. c = √(8RT/∏M)Most probable velocity (speed)

4. Ek = m/2 c²Ideal gas equation for a mole of ideal gas

5. μ = (M/Na ∏σ²) √(RT/∏M)Molecular Diffusion - Diffusivity

Net transport of a substance from one region to another within a single phase, in absence of bulk movement or agitation.

Dab - Diffusion Coefficient
σ - Collision Diameter