Table of contents

1. Intro to General Chemistry3h 48m
2. Atoms & Elements4h 16m
3. Chemical Reactions4h 10m
4. BONUS: Lab Techniques and Procedures1h 38m
5. BONUS: Mathematical Operations and Functions48m
6. Chemical Quantities & Aqueous Reactions3h 53m
7. Gases3h 49m
8. Thermochemistry2h 37m
9. Quantum Mechanics2h 58m
10. Periodic Properties of the Elements3h 9m
11. Bonding & Molecular Structure3h 29m
12. Molecular Shapes & Valence Bond Theory1h 57m
13. Liquids, Solids & Intermolecular Forces2h 23m
14. Solutions3h 1m
15. Chemical Kinetics2h 53m
16. Chemical Equilibrium2h 29m
17. Acid and Base Equilibrium5h 1m
18. Aqueous Equilibrium4h 47m
19. Chemical Thermodynamics1h 50m
20. Electrochemistry2h 42m
21. Nuclear Chemistry2h 36m
22. Organic Chemistry5h 7m
23. Chemistry of the Nonmetals2h 39m
24. Transition Metals and Coordination Compounds3h 16m

7. Gases

The Ideal Gas Law Applications

General Chemistry

7. Gases

The Ideal Gas Law Applications

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Multiple Choice

A 75.0 g sample of dinitrogen monoxide (N2O) is confined in a 4.12 L vessel. What is the pressure (in atm) at 205.0°F, given that the ideal gas constant R is 0.0821 L·atm/mol·K?

3.45 atm

2.89 atm

1.76 atm

4.12 atm

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Verified step by step guidance

Convert the temperature from Fahrenheit to Kelvin. Use the formula: \( K = \frac{5}{9}(F - 32) + 273.15 \). Substitute 205.0°F into the formula to find the temperature in Kelvin.

Calculate the number of moles of dinitrogen monoxide (N2O). Use the molar mass of N2O, which is approximately 44.01 g/mol. Use the formula: \( \text{moles} = \frac{\text{mass}}{\text{molar mass}} \). Substitute 75.0 g for the mass.

Use the ideal gas law to find the pressure. The ideal gas law is given by \( PV = nRT \), where P is pressure, V is volume, n is the number of moles, R is the ideal gas constant, and T is temperature in Kelvin.

Rearrange the ideal gas law to solve for pressure: \( P = \frac{nRT}{V} \). Substitute the values for n (moles of N2O), R (0.0821 L·atm/mol·K), T (temperature in Kelvin), and V (4.12 L) into the equation.

Calculate the pressure in atm using the rearranged ideal gas law equation. This will give you the pressure of the gas in the vessel.