Gas law problem (changing volume, temperature and pressure)

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SUMMARY

The forum discussion centers on a gas law problem involving the calculation of gas volume under different conditions. The initial conditions are defined as 65 cm³ at 40°C and 75 mmHg, while the final conditions are at Standard Temperature and Pressure (STP). Participants clarify that STP is typically defined as 273.15 K and 760 mmHg, although some sources may use 750 mmHg. The ideal gas equation (PV=nRT) and the combined gas law (P1V1/T1 = P2V2/T2) are suggested as methods for solving the problem.

PREREQUISITES
  • Understanding of the Ideal Gas Law (PV=nRT)
  • Familiarity with the Combined Gas Law (P1V1/T1 = P2V2/T2)
  • Knowledge of Standard Temperature and Pressure (STP) definitions
  • Basic skills in unit conversion (e.g., Celsius to Kelvin)
NEXT STEPS
  • Learn how to apply the Ideal Gas Law in practical scenarios
  • Study the Combined Gas Law and its applications in gas volume calculations
  • Research different definitions of STP and their implications in gas calculations
  • Practice solving gas law problems with varying initial and final conditions
USEFUL FOR

Chemistry students, physics students, educators teaching gas laws, and anyone involved in laboratory work requiring gas volume calculations.

  • #31
Tasha Clifford said:
I still want to know how i could go about with the problem using the ideal gas equation as you said
##P_1V_1 = nRT_1##. Solve your initial condition to find the number of moles of the gas. Since this does not change, plug that into ##P_2 V_2 = nRT_2##.

-Dan
 
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  • #32
topsquark said:
##P_1V_1 = nRT_1##. Solve your initial condition to find the number of moles of the gas. Since this does not change, plug that into ##P_2 V_2 = nRT_2##.

-Dan
Ok ✅
 
  • #33
topsquark said:
##P_1V_1 = nRT_1##. Solve your initial condition to find the number of moles of the gas. Since this does not change, plug that into ##P_2 V_2 = nRT_2##.

-Dan
Please how did you type the equation , i see it as( ##P_1V_1 = nRT_1##)
but it actually appears in the message itself as the ideal gas equation ??
 
Last edited:
  • #34
Tasha Clifford said:
Please how did you type the equation , i see it as( ##P_1V_1 = nRT_1##)
but it actually appears in the message itself as the ideal gas equation ??
We use a version of LaTeX here. The basic stuff is actually pretty simple. We have an actual Forum but see this link here to get you started.

-Dan
 

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