Question

A sample of gas has a pressure of 1120 mm Hg. What is this pressure in atm?

Answer 1

Q139740

A sample of gas has a pressure of 1120 mm Hg. What is this pressure in atm?

Answer:

We are given the pressure of gas in 'mm Hg' and have to convert it to 'atm' .

1atm is defined as the pressure exerted by a 760 mm of mercury at 0⁰C (273.15K).  

So, 1atm = 760 mm Hg.

We can use this conversion factor for converting 1120 mm Hg to ‘atm’.

Pressure in atm = 1120 mm Hg * 1atm/760 mm Hg = 1.474 atm.

In question we are given 1120 mm Hg in 3 significant figure. We are ignoring

0 because there is no decimal point after 0. So our final answer must also be rounded to

3 significant figure.

Hence the pressure exerted by the gas in atm is 1.47 atm.