The answer to this question would Pa or Pascal, atm or atmospheric, and torr as torr itself.
What would be the base unit of pressure would be the Pascal or Pa which is equal to 1 Newton per square meter. In chemistry, atm and torr would be what is commonly used for the unit of pressure. Taking these three together, the conversion would be as follows:
1 atm = 101,325 Pa = 760 torr
With this taken into consideration, when to use the unit of pressure would be depending on the situation or which is currently utilized in the presented problem or the situation that it is involved. Either way, the conversion should be taken into account so as to present accurate results and interpretations.
