Question

If a gas has a gauge pressure of 156 kPa, its absolute pressure is approximately
Question 8 options:

A)

56 kPa.

B)

256 kPa.

C)

300 kPa.

D)

100 kPa

Answer 1

To convert gauge pressure to absolute pressure, you need to add the atmospheric pressure to the gauge pressure. Atmospheric pressure at sea level is approximately 101.3 kPa (you can round it to 100 kPa for simplicity).

Given:
- Gauge pressure = 156 kPa
- Atmospheric pressure = 100 kPa

Absolute pressure = Gauge pressure + Atmospheric pressure

Absolute pressure = 156 kPa + 100 kPa = 256 kPa

Therefore, the approximate absolute pressure is:

**B) 256 kPa.**