Answer :
To determine the absolute pressure of a gas when the gauge pressure is given, you can use the following relationship:
Absolute Pressure = Gauge Pressure + Atmospheric Pressure
1. Understand the Terms:
- Gauge Pressure: The pressure of the gas measured relative to atmospheric pressure. In this question, it's given as 114 kPa.
- Atmospheric Pressure: The pressure exerted by the weight of the atmosphere. A standard value often used for atmospheric pressure is approximately 100 kPa.
2. Calculation:
- Add the gauge pressure to the atmospheric pressure to find the absolute pressure.
- So, the calculation would be:
Absolute Pressure = 114 kPa (gauge pressure) + 100 kPa (atmospheric pressure) = 214 kPa
Therefore, the absolute pressure of the gas is 214 kPa.
From the options given, the correct answer is:
- B. 214 kPa
Absolute Pressure = Gauge Pressure + Atmospheric Pressure
1. Understand the Terms:
- Gauge Pressure: The pressure of the gas measured relative to atmospheric pressure. In this question, it's given as 114 kPa.
- Atmospheric Pressure: The pressure exerted by the weight of the atmosphere. A standard value often used for atmospheric pressure is approximately 100 kPa.
2. Calculation:
- Add the gauge pressure to the atmospheric pressure to find the absolute pressure.
- So, the calculation would be:
Absolute Pressure = 114 kPa (gauge pressure) + 100 kPa (atmospheric pressure) = 214 kPa
Therefore, the absolute pressure of the gas is 214 kPa.
From the options given, the correct answer is:
- B. 214 kPa
