Answer:
1. The device is a barometer.
2. This is boyle's law.
3. The gas is called an ideal gas.
4. The device is a manometer.
Explanation:
- A barometer is a meteorological instrument that is used for measuring atmospheric pressure in a specific place. The pressure can be very useful in predicting the weather changes or pattern of that particular place. Normally, the atmospheric pressure is measured in units called atmospheres.
- Boyle' s law is the indirect relationship between the volume and pressure of gas. This means that when the volume of gas increases, the pressure decreases significantly. However, both temperature and number of molecules are constant. They don't change.
- An ideal gas is the one that typically obeys the gas laws.
- A manometer is an instrument used to measure the pressure of a gas.