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

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

Step-by-step 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* (760\,torr)/(760\,mm\,Hg)`

`x = 739\,torr`

`x = 739\,mm\,Hg* (1\,atm)/(760\,mm\,Hg)`

`x = 0.972\,atm`