1 Atm (atmospheric pressure) is equal to 760 torr (mmHg). To convert atm to torr, multiply the atm value by 760. atm to torr (mmHg) formula. torr = atm * 760. Formula: multiply the value in atm by the conversion factor ‘760’. So, 1.25 atm = 1.25 × 760 = 950 torrs. Conversion of 1.25 atm to other pressure units. 1.25. Can you please change the 1.25 atm to torr. I’m preparing for my exams. Need something for the Torr. oliver97. over 9 years ago. Analytical Chemistry.1 Standard Atmosphere Conversion 1.25 atm, 950 torr 1.26 atm, 957.6 torr 1.27 atm, 965.2 torr 1.28 atm, 972.8 torr.divide by 760 1 torr = 1/760 atm to convert atm to torr, divide by 760. e.g. 319200 torr = 420 atm.

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