1.05 atm is equivalent to how many torr? How many mmHg?
The correct answer and explanation is:
Correct Answer:
1.05 atm is equivalent to 798.75 torr and 798.75 mmHg.
To convert atmospheres (atm) into torr or mmHg, use the known conversion factor:
1 atm = 760 torr = 760 mmHg
This relationship means that pressure values in atmospheres can be directly multiplied by 760 to obtain the value in either torr or mmHg. Since torr and mmHg are numerically equivalent for practical purposes, the same conversion can be used for both.
To convert 1.05 atm to torr:
1.05 atm × 760 torr/atm = 798.75 torr
To convert 1.05 atm to mmHg:
1.05 atm × 760 mmHg/atm = 798.75 mmHg
So, 1.05 atm equals 798.75 torr and 798.75 mmHg.
These units measure pressure, which is the force applied per unit area. The atmosphere (atm) is based on the average pressure at sea level. Torr and mmHg are nearly interchangeable; 1 torr is defined as exactly 1/760 of an atmosphere. The mmHg unit, short for millimeters of mercury, originally referred to the pressure exerted by a mercury column in a barometer. Because 1 mmHg is almost exactly equal to 1 torr, they are often treated as the same in chemistry and physics.
Understanding unit conversions like these is important in many scientific disciplines. In chemistry, gas laws such as Boyle’s Law or the Ideal Gas Law often require consistent pressure units. In medicine, blood pressure is measured in mmHg, while in engineering or physics, pressure may be measured in atm, torr, or Pascals depending on the context. Being able to convert between units ensures consistency in calculations and clarity in communication across different fields.