Suppose some nitrogen gas is contained in a cylinder whose volume is 0.00830 m³. The pressure in the box is 3.44 X 106 Pascals, and the temperature is 39°C. (Molecular weight of = 28) Find (a) the number of moles of nitrogen in the gas in the box, (b) the mass of one molecule of nitrogen (N2) (b) the average speed of a molecule in the gas.

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### Temperature Conversion

- **Celsius to Kelvin:**
  \[ T_C = T_k - 273^\circ C \]

- **Celsius to Fahrenheit:**
  \[ T_F = \frac{9}{5}T_C + 32 \]

- **Fahrenheit to Celsius:**
  \[ T_C = \frac{5}{9}(T_F - 32) \]

### Thermal Expansion

- **Linear Expansion:**
  \[ \Delta L = \alpha L_0 \Delta T \]

- **Area Expansion:**
  \[ \Delta A = \gamma A_0 \Delta T \]
  \[ \gamma = 2\alpha \]

- **Volume Expansion:**
  \[ \Delta V = \beta V_0 \Delta T \]
  \[ \beta = 3\alpha \]

### Ideal Gas Law

\[ PV = nRT \]

### Combined Gas Law

\[ \frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2} \]

### Kinetic Theory of Gases

\[ \frac{1}{2} mv^2 = \frac{3}{2}k_b T \]

- **Boltzmann's Constant:**  
  \[ k_B = 1.38 \times 10^{-23} \, \text{J/K} \]

### Constants

- **Number of Moles (n):**
  \[ n = \frac{\text{mass (grams)}}{\text{molecular weight}} \]

- **Avogadro’s Number:**
  \[ N_A = 6.02 \times 10^{23} \]

- **Universal Gas Constant (R):**
  \[ R = 8.31 \, \text{J/mole-K} \]
Transcribed Image Text:### Temperature Conversion - **Celsius to Kelvin:** \[ T_C = T_k - 273^\circ C \] - **Celsius to Fahrenheit:** \[ T_F = \frac{9}{5}T_C + 32 \] - **Fahrenheit to Celsius:** \[ T_C = \frac{5}{9}(T_F - 32) \] ### Thermal Expansion - **Linear Expansion:** \[ \Delta L = \alpha L_0 \Delta T \] - **Area Expansion:** \[ \Delta A = \gamma A_0 \Delta T \] \[ \gamma = 2\alpha \] - **Volume Expansion:** \[ \Delta V = \beta V_0 \Delta T \] \[ \beta = 3\alpha \] ### Ideal Gas Law \[ PV = nRT \] ### Combined Gas Law \[ \frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2} \] ### Kinetic Theory of Gases \[ \frac{1}{2} mv^2 = \frac{3}{2}k_b T \] - **Boltzmann's Constant:** \[ k_B = 1.38 \times 10^{-23} \, \text{J/K} \] ### Constants - **Number of Moles (n):** \[ n = \frac{\text{mass (grams)}}{\text{molecular weight}} \] - **Avogadro’s Number:** \[ N_A = 6.02 \times 10^{23} \] - **Universal Gas Constant (R):** \[ R = 8.31 \, \text{J/mole-K} \]
Suppose some nitrogen gas is contained in a cylinder whose volume is 0.00830 m³. The pressure in the box is 3.44 x 10⁶ Pascals, and the temperature is 39°C. (Molecular weight of N₂ = 28)

Find:
(a) the number of moles of nitrogen in the gas in the box,
(b) the mass of one molecule of nitrogen (N₂),
(c) the average speed of a molecule in the gas.
Transcribed Image Text:Suppose some nitrogen gas is contained in a cylinder whose volume is 0.00830 m³. The pressure in the box is 3.44 x 10⁶ Pascals, and the temperature is 39°C. (Molecular weight of N₂ = 28) Find: (a) the number of moles of nitrogen in the gas in the box, (b) the mass of one molecule of nitrogen (N₂), (c) the average speed of a molecule in the gas.
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