## Chemistry and Chemical Reactivity (9th Edition)

Performing the unit conversions: $210\ mmHg×1\ atm/760\ mmHg=0.276\ atm$ $210\ mmHg×1.01325\ bar/760\ mmHg=0.280\ bar$ $210\ mmHg×101.325\ kPa/760\ mmHg=28.0\ kPa$