Question

A student reads a barometer in the laboratory and finds the prevailing atmospheric pressure to be 739 mmHg. Express this pressure in torr and in atmospheres. Hint: Pressure

Answer 1

Answer:

$739\,mm\,Hg = 739\,torr = 0.972\,atm$

Explanation:

760 torr equals 760 mm Hg and 1 atmosphere of pressure. Hence, we get all equivalencies by simple rule of three:

$x = 739\,mm\,Hg\times \frac{760\,torr}{760\,mm\,Hg}$

$x = 739\,torr$

$x = 739\,mm\,Hg\times \frac{1\,atm}{760\,mm\,Hg}$

$x = 0.972\,atm$