Question

whats the actual accepted pressure at STP?

Answer 1

1 atm

Answer 2

sorry..hit enter too early...which is equivlent to 760mmHG or 760 tor

Answer 3

STP, as defined by IUPAC are:

T = 273.15 K = 0 °C
P = \(10^5\) Pa

References:
http://goldbook.iupac.org/S06036.html
http://goldbook.iupac.org/S05910.html
http://en.wikipedia.org/wiki/Standard_conditions

Answer 4

1atm or 760 torr

Answer 5

1 atm = 1.01325 x 10^5 Pa was standard before 1990 decision by IUPAC.

1 bar = 10^5 Pa has been 'new' standard for 22 years, probably before you were born!