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A 824 mL sample of NH3 gas is at STP. If the volume changes to 549 mL and the temperature changes to 27ºC, what will be the new pressure in atmospheres?

New pressure = ______ atm

Answer :

Final answer:

The new pressure of the NH3 gas will be approximately 0.616 atm.

Explanation:

To calculate the new pressure, we can use the ideal gas law equation:

P1V1/T1 = P2V2/T2

Given:

  • P1 = 1 atm (STP)
  • V1 = 824 mL
  • T1 = 0ºC = 273 K (STP)
  • V2 = 549 mL
  • T2 = 27ºC = 300 K

Substituting the values into the equation:

(1 atm)(824 mL)/(273 K) = P2(549 mL)/(300 K)

Simplifying the equation:

P2 = (1 atm)(549 mL)(273 K)/(824 mL)(300 K)

Calculating the new pressure:

P2 ≈ 0.616 atm

Learn more about calculating pressure using the ideal gas law here:

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