Final answer:
To find the final gas pressure, convert measurements from mmHg to atmospheres or use the Ideal Gas Law if volume and temperature changes are involved. Partial pressures are summed to find the total pressure.
Step-by-step explanation:
The final gas pressure can be determined using the Ideal Gas Law or conversion factors provided for pressure units. When given a pressure in millimeters of mercury, mmHg, we can convert this to atmospheres using the known equivalence that 1 atm equals 760 mmHg. By dividing the pressure in mmHg by 760, we can obtain the pressure in atmospheres. If the problem provides initial conditions and changes in volume and temperature, the Ideal Gas Law can be utilized to find the final pressure after such changes.
For problems requiring the calculation of partial pressures of gases or total pressure in atmospheres, Dalton's Law of Partial Pressures is applied, adding together the partial pressures of individual gases to find the total pressure.