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11111nata11111 [884]
3 years ago
9

Type the correct answer in the box. Express your answer to three significant figures. A balloon is filled with 0.250 mole of air

at 35°C. If the volume of the balloon is 6.23 liters, what is the absolute pressure of the air in the balloon? The absolute pressure of the air in the balloon is kilopascals.
Chemistry
1 answer:
Setler79 [48]3 years ago
7 0

Answer:

102.8 kPa.

Explanation:

  • We can use the general law of ideal gas: <em>PV = nRT.</em>

where, P is the pressure of the gas in atm (P = ??? atm).  

V is the volume of the gas in L (V = 4000 mL = 6.23 L).  

n is the no. of moles of the gas in mol (n = 0.25 mol).

R is the general gas constant (R = 0.0821 L.atm/mol.K),  

T is the temperature of the gas in K (T = 35ºC + 273 = 308 K).

∴ P = nRT/V = (0.25 mol)(0.0821 L.atm/mol.K)(308 K)/(6.23 L) = 1.015 atm.

  • To convert to kPa:

<em><u>multiply the pressure value by 101.325 </u></em>

∴ P = (1.0 atm)(101.325 kPa/1.0 atm) = 102.8 kPa.

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A gas has a pressure of 1.34 atm when the temperature is 237K. The gas is then heated until the temperature measures 312K. What
alexandr1967 [171]

The answer for the following question is answered below.

  • <em><u>Therefore the new pressure of the gas is 1.76 atm.</u></em>

Explanation:

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To solve:

Final temperature of the gas

We know;

From the ideal gas equation

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So;

from the above equation we can say that

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P_{1} = initial pressure of a gas

P_{2} = final pressure of a gas

T_{1} = initial temperature of a gas

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