At a pressure of 907 mbar, what would be the corresponding height of the mercury in the column of a mercury barometer?

The answer for this problem can be computed in two ways:

1 bar or 1000 mbar = 750 mm Hg

0.907 bar = 907 mbar = 680.25 mm Hg. Or907 mbar * 10^-3 / 1.01325 = 0.8951

0.8951 atm * 760mm Hg/1atm = 680.31 mm Hg would be the corresponding height of the mercury in the column of a mercury barometer.