Question

What is the equivalent pressure of 0.905 atm in units of mmHg?

Answer 1

0.905 atm = 688 mmHg

Explanation:

Use dimensional analysis.

First determine the relationship between atmospheres and mmHg.

`"1 atm = 760 mmHg"`

There are two conversation factors:

`(1"atm")/(760"mmHg")` and `(760"mmHg")/(1"atm")`

Multiply the given atm in your question by the conversion factor with 760 mmHg in the numerator.

`0.905cancel"atm"xx(760"mmHg")/(1cancel"atm")="688 mmHg"`