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Questions and Answers
What is the volume of the gas at a pressure of 1.0 atm and a temperature of 294K?
What is the volume of the gas at a pressure of 1.0 atm and a temperature of 294K?
What is the initial pressure of the gas in atm?
What is the initial pressure of the gas in atm?
What is the temperature of the gas in Kelvin?
What is the temperature of the gas in Kelvin?
What is the equation used to calculate the volume of the gas?
What is the equation used to calculate the volume of the gas?
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What is the final pressure of the gas in atm?
What is the final pressure of the gas in atm?
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What is the total pressure of the gas mixture, Ptotal, in the given equation?
What is the total pressure of the gas mixture, Ptotal, in the given equation?
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What is the purpose of a barometer in atmospheric pressure measurement?
What is the purpose of a barometer in atmospheric pressure measurement?
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What is the characteristic of the gas mixture represented by the equation, considering the values of ni and nt?
What is the characteristic of the gas mixture represented by the equation, considering the values of ni and nt?
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What happens to the pressure of a gas when it is compressed?
What happens to the pressure of a gas when it is compressed?
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What is the value of Pi in the given equation, considering the value of ni as 0.78?
What is the value of Pi in the given equation, considering the value of ni as 0.78?
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What is the equivalent of 1 atmosphere in American Engineering Units?
What is the equivalent of 1 atmosphere in American Engineering Units?
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What is the primary function of a barometer?
What is the primary function of a barometer?
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What is the pressure exerted on the top of your head, assuming a surface area of 0.25×0.20 m2?
What is the pressure exerted on the top of your head, assuming a surface area of 0.25×0.20 m2?
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What is the unit of pressure that is equivalent to lb/in2?
What is the unit of pressure that is equivalent to lb/in2?
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What is the atmospheric pressure equivalent to?
What is the atmospheric pressure equivalent to?
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Study Notes
Pressure and Atmosphere
- 1 atmosphere is equal to 14.7 psi (pounds per square inch)
- American Engineering Unit for pressure is psi, which is equivalent to lb/in2
Barometer
- Used to measure atmospheric pressure
Pressure Calculation
- Total pressure (Ptotal) can be calculated using the formula: Pi = (0.25 × 0.20 m2) × Ptotal
- Example calculation: Pi = (0.25 × 0.20 m2) × 760 torr = 590 torr
Ideal Gas Equation
- The equation is: P1V1 = P2V2
- Example problem:
- Initial conditions: P1 = 18.5 atm, V1 = 50.0 L, T1 = 294K
- Final conditions: P2 = 1.0 atm, T2 = 294K
- Solution: V2 = (50.0 L) × (18.5 atm) / (1.0 atm) = 925 L
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Description
Quiz on atmospheric pressure, its measurement and the barometer. Calculating pressure in psi and conversions to other units.
