Convert 2 PSI to inches of H20.
well,
memorize this
standard pressure is
101.3kPa
760 torr
760 mmHg
14.5 PSI
1 atm
now, since all these are equal
2psi/14.5PSI=x mmHg/760mmHg
solve for x mmHg
then x mmWater= x mmHg* specificgravityHg
now, convert xmmWater to inches
x inch water= 25.4*xmmWhater