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The volume of a certain gas is 29.3 liters at STP. what would the volume of the same gas at 1.39 atmospheres and -23.0℃?

A. 23 L
B. 37.3 L
C. 19.3 L
D. 22.4 L

Respuesta :

Option C) 19.3L is the correct answer.

Hence, the final volume of the gas at the standard atmospheres and temperature is 19.3L.

Given the data in the question;

  • Initial volume of gas; [tex]V_1 = 29.3L[/tex]

At Standard temperature and pressure( STP)

  • Initial temperature; [tex]T_1 = 273.15K[/tex]
  • Initial pressure; [tex]P_1 = 1.00atm[/tex]

Then

  • Final pressure; [tex]P_2 = 1.39atm[/tex]
  • Final temperature; [tex]T_2 = -23.0^0C = 250.15K[/tex]

Final Volume; [tex]V_2 = \ ?[/tex]

Combined gas law

Combined gas law combines both Boyle's Law, Charles's Law, and Gay-Lussac's Law. It states that the ratio of the product of volume and pressure and the absolute temperature of a gas is equal to a constant.

It is expressed as;

[tex]\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}[/tex]

To determine the new volume of the gas, we substitute our values into the expression above.

[tex]\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}\\\\P_1V_1T_2 = P_2V_2T_1\\\\1.00atm * 29.3L * 250.15K = 1.39atm * V_2 * 273.15K\\\\7329.395atm.L.K = 379.6785atm.K * V_2\\\\V_2 = \frac{7329.395atm.L.K}{379.6785atm.K} \\\\V_2 = 19.3L[/tex]

Option C) 19.3L is the correct answer.

Hence, the final volume of the gas at the standard atmospheres and temperature is

Learn more about the combined gas law: https://brainly.com/question/25944795