# How do you convert 225 mmHg into atmospheres?

$0.296 \setminus a t m$
The conversion factor needed is $1.00 \setminus a t m = 760 \setminus m m H g$
$225 \setminus m m H g \times \frac{1.00 \setminus a t m}{760. m m H g} = 0.296 \setminus a t m$