Question

Convert a barometric pressure (PB) of 700 mmHg to cmH₂O.

A) 933.33 cmH₂O
B) 940.88 cmH₂O
C) 946.26 cmH₂O
D) 952.41 cmH₂O

Answer 1

A barometric pressure (PB) of 700 mmHg to cmH₂O is 952.41 cmH₂O (Option D).

Step-by-step explanation:

To convert a barometric pressure of 700 mmHg to cmH₂O, we need to use the relationship between mmHg and cmH₂O. First, we need to know that 1 mmHg is equivalent to 1.36 cmH₂O when converting between these units of pressure. We get this conversion factor because the density of mercury is 13.6 g/cm³ and 1 cmH₂O is the pressure exerted by a 1 cm height of water.

To calculate the pressure in cmH₂O, we would multiply:

700 mmHg * 1.36 cmH₂O/mmHg = 952 cmH₂O.

Therefore, the closest correct answer from the provided options is D) 952.41 cmH₂O.